Bus ticket from Ha Noi to Thai Nguyen

Find the best bus tickets from 8 bus operators for your Hanoi to Thai Nguyen - Thai Nguyen trip

: 235 trips daily

Vexere Team

Last Updated: 30/11/2025

Select a departure date to see ticket prices, available seats and special offers

Hà Lan

4.8

(982 ratings)

Limousine seater van

Limousine seater bus

No. 87 Dai Co Viet street

No 42a, Bac Son Street

The first time I rode the bus, I sat comfortably and pleasantly, and even got a massage. The consultant was very gentle. I sat on the bus and fell asleep immediately. I fell asleep and forgot where to go home. Luckily, the driver reminded me of that part, then I woke up. The driver was friendly and easy to talk to. In general, since going to the Netherlands in year 3, I think the Netherlands is still the top 1 in my heart. 100 points. I hope the company always brings the best experience to customers.

Instant booking

Bảo Phong

4.4

(408 ratings)

Standard seater bus

Ha Noi Office

1h45m

Thai Nguyen Office

I have had impressive experiences with Bao Phong cars. New car, clean seats. Friendly staff, enthusiastically invite guests to board. Create good impressions for customers

NO PREPAYMENT REQUIRED

Instant booking

Đức Phúc Limousine

4.9

(197 ratings)

Limousine seater bus

94H Lang street iced tea shop

1h45m

Thong Nhat office

Fun and friendly driving; clean car; There is a shuttle bus in Thai Nguyen City

NO PREPAYMENT REQUIRED

Instant booking

Halan Buslines

4.7

(274 ratings)

Standard seater bus

My Dinh Bus Station

1h30m

Thai Nguyen City Central Bus Station

Although the bus I took today was not of good quality. However, the driver was very friendly, enthusiastic and kind. And most importantly, I arrived safely. So for me, this is still a 5-star bus. Besides, I hope Ha Lan bus company can improve the quality of the bus so that customers can have a better experience!

NO PREPAYMENT REQUIRED

Instant booking

Thường Lan

(3 ratings)

Limousine seater bus

Yen Nghia Bus Station

2h30m

Bến xe Thái Nguyên

Enthusiastic staff, clean and luxury interior. Full amenities. Calm driver.

NO PREPAYMENT REQUIRED

Bus tickets from Hanoi to Thai Nguyen: 235 trips

TOP 5 prestigious, high-quality and luxury bus from Hanoi to Thai Nguyen 12/2025

🚌 1. Thuong Lan bus : High-quality Hanoi Thai Nguyen bus
🚌 2. Duc Phuc Limousine bus : High-quality Hanoi Thai Nguyen bus
🚌 3. Ha Lan bus : High-quality Hanoi Thai Nguyen bus
🚌 4. Halan Buslines bus : High-quality Hanoi Thai Nguyen bus
🚌 5. Bao Phong bus : High-quality Hanoi Thai Nguyen bus

Frequently asked questions for your Hanoi to Thai Nguyen bus trip
Bus service from Hanoi to Thai Nguyen
Route introduction Thai Nguyen from Hanoi

1. Quality and reviews of Hanoi Thai Nguyen bus / coach companies
2. The bus / coach fares from Sai Hanoi - Thai Nguyen
3. Different types of Thai Nguyen - Hanoi buses:

Bus/Coache Fares and Schedules/Timetables From Thai Nguyen to Hanoi
What is the fastest and most prestigious way to book a bus ticket to Thai Nguyen - Hanoi from Sai Gon?
Book bus tickets Tet 2026 from Hanoi to Thai Nguyen

Frequently asked questions for your Hanoi to Thai Nguyen bus trip

Question: How to get from Thai Nguyen to Hanoi ?

Answer: Buses/coaches are the best modes and popular of transportation for traveling from Thai Nguyen to Hanoi. You can book ideal bus tickets online from Thai Nguyen to Hanoi from your home by simply book on Vexere website or app in the sescure, safe and fast online payment. Your bus reservation is 100% guaranteed.

Question: How to book bus/coach tickets from Thai Nguyen to Hanoi ?

Answer: You can purchase Thai Nguyen to Hanoi bus/coach tickets by the secure, simple and fast way with the best price on Vexere.com

Question: How do I find cheapest bus tickets price from Thai Nguyen to Hanoi ?

Answer: Thanks to Vexere.com, you can compare buses and find lowest bus ticket prices for your trip from Hanoi to Thai Nguyen – at one glance, you can check the bus schedules/timetables, bus fares, reviews and what features and services are offered on the bus

Question: Which bus operators on Thai Nguyen to Hanoi bus route are popular and highly rated as vip, luxury bus with hiqh-quality, premium bus amenities?

Answer: Popular bus companies on Thai Nguyen to Hanoi highly rated as the VIP, luxury bus with hiqh-quality, premium bus amenities are Thuong Lan, Duc Phuc Limousine, Ha Lan bus. See the full list: Hanoi to Thai Nguyen bus

Question: How much does it cost to travel from Thai Nguyen to Hanoi by bus?

Answer: The bus ticket price from Thai Nguyen to Hanoi varies depending on the types of bus that you choose. It ranges from 68.000VND - 150.000VND.

Question: Which Hanoi to Thai Nguyen bus has the best price?

Answer: The cheapest / minimum bus fare to Thai Nguyen from Hanoi has the price of 68.000 VND from Thường Lan bus. See the full list: Hanoi to Thai Nguyen bus

Question: Is the Hanoi to Thai Nguyen bus e-ticket in smartphone or tablet acceptable?

Answer: After you book your bus ticket from Hanoi to Thai Nguyen online with Vexere, you will receive your ticket in your e-mail. E-tickets in smartphone or tablet are acceptable when you book on Vexere.com. Follow the instruction at Vexere.com

Question: How many bus providers run from Hanoi to Thai Nguyen?

Answer: Up to now, there are 5 brands of bus companies operating on the Hanoi Thai Nguyen route. See the full list: Bus from Hanoi to Thai Nguyen.

Question: How long does it take to travel by bus from Hanoi to Thai Nguyen?

Answer: The journey Hanoi to Thai Nguyen takes on average 1.8 hours if the road is quite favorable.

Question: What is the distance to travel by bus Hanoi to Thai Nguyen?

Answer: Travel distance from Hanoi to Thai Nguyen by bus is about 80 km.

Question: How many bus trips Hanoi to Thai Nguyen daily?

Answer: The average Thai Nguyen Hanoi bus route has about 235 trips per day on Vexere.com starting from 500 to 2100 pm by about 5 bus companies operating. : Thuong Lan, Duc Phuc Limousine, Ha Lan, Halan Buslines, Bao Phong

Question: Which bus from Hanoi to Thai Nguyen has the earliest departure time?

Answer: Thai Nguyen Hanoi bus bus trip (including seater, limousine) has the earliest time of departure at 5:00 and belongs to Hà Lan bus.

Question: Which bus from Hanoi Thai Nguyen has the latest departure time?

Answer: Hanoi Thai Nguyen bus trip (including seater, limousine) has the latest departure time at 21:00 and belongs to Hà Lan bus.

Question: Which Hanoi Thai Nguyen bus company is considered to be of the best quality, vip bus service?

Answer: The Hanoi to Thai Nguyen bus company has a bus with premium, high-quality service is bus Thuong Lan from Hanoi to Thai Nguyen with a quality score of 5/5 based on 3 customer reviews.

Question: Is there any ideal bus for couple from Hanoi to Thai Nguyen?

Answer: Currently, there is no bus companies with a bus to Hanoi Thai Nguyen for couples ..

Question: Is there any vip, luxury sleeping bus from Hanoi to Thai Nguyen?

Answer: Currently, there is no bus company that has a vip, high-class sleeper bus to Hanoi Thai Nguyen

Question: Is there any cabin sleeper bus from Hanoi to Thai Nguyen?

Answer: Currently, there is no bus company that has a vip, high-class sleeper bus to Hanoi Thai Nguyen

Question: What are the payment options I can use for online bus ticket booking to Thai Nguyen from Hanoi on Vexere.com

Answer: We have multiple sescure, safe and fast payment method for you to book your bus from Hanoi to Thai Nguyen such as:

Internet banking
Credit/Debit Card
e-Wallet (MoMo, ZaloPay, VNPay,...)
Cash

Bus service from Hanoi to Thai Nguyen
Distance	80 km
Time takens	1.8 hours
Average Price	109.000 VNĐ
Number of buses	235 trip
Total Operators	5 companies

TOP 5 prestigious, high-quality and luxury bus from Hanoi to Thai Nguyen - Thai Nguyen 12/2025

🚌 1 Thuong Lan bus : High-quality Hanoi Thai Nguyen - Thai Nguyen bus

a. Introduction of Thuong Lan

Thuong Lan bus is a bus company from Hanoi to Thai Nguyen - Thai Nguyen you should definitely not miss if you want to experience the safest and most comfortable travel journey. Right from the first days of operation on this route, the bus company Thuong Lan bus has left a lot of good impressions with many tourists. The quality vehicle system and dedicated customer care service are also plus points that many tourists recommend to experience once.

b.Thuong Lan's image

Xe Thuong Lan : Xe đi Thai Nguyen - Thai Nguyen chất lượng cao từ Hanoi

c. Departure and arrival time of Thuong Lan bus to Thai Nguyen - Thai Nguyen from Hanoi

Departure time in Hanoi: 15:30
Arrival time in Thai Nguyen - Thai Nguyen: 17:18
Time for Thuong Lan bus to ride to Thai Nguyen - Thai Nguyen from Hanoi is about: 1.8 hours

d.Thuong Lan bus pick-up points

Bến xe Yên Nghĩa.

e. Thuong Lan bus drop-off points

Bến xe Thái Nguyên

f. Thuong Lan bus fares from Thai Nguyen - Thai Nguyen from Hanoi

seater 68000đ/ticket
limousine 68000đ/ticket

g. Review the quality of Thuong Lan bus

Thuong Lan bus is rated with an average score of 5.0/5 based on 3 reviews of customers who have experienced this bus company's service.

h. Information of Thuong Lan companies

Thuong Lan bus office at Hanoi:

Check Thuong Lan bus office address https://vexere.com/en-US/thuong-lan-bus
Phone number for booking bus tickets Hanoi Thai Nguyen - Thai Nguyen: 1900 888684

🚌 2 Duc Phuc Limousine bus : High-quality Hanoi Thai Nguyen - Thai Nguyen bus

a. Introduction of Duc Phuc Limousine

The Duc Phuc Limousine bus from Hanoi to Thai Nguyen - Thai Nguyen has been operating in the field of passenger transport for many years, so it is trusted and chosen by many customers. Since its establishment, the bus company Duc Phuc Limousine bus has focused on exploiting and providing passengers with the best quality rides. That's why it is always the name that is remembered by passengers whenever there is a need to travel on this route.

b.Duc Phuc Limousine's image

Xe Duc Phuc Limousine : Xe đi Thai Nguyen - Thai Nguyen chất lượng cao từ Hanoi

c. Departure and arrival time of Duc Phuc Limousine bus to Thai Nguyen - Thai Nguyen from Hanoi

Departure time in Hanoi: 05:00, 06:00, 07:00, 08:00, 09:00, 10:00, 11:00, 12:00, 13:00, 14:00
Arrival time in Thai Nguyen - Thai Nguyen: 6:48, 7:48, 8:48, 9:48, 10:48, 11:48, 12:48, 13:48, 14:48, 15:48
Time for Duc Phuc Limousine bus to ride to Thai Nguyen - Thai Nguyen from Hanoi is about: 1.8 hours

d.Duc Phuc Limousine bus pick-up points

94H quán Trà đá đường Láng

e. Duc Phuc Limousine bus drop-off points

Văn phòng Thống Nhất

f. Duc Phuc Limousine bus fares from Thai Nguyen - Thai Nguyen from Hanoi

seater 140000đ/ticket
limousine 140000đ/ticket

g. Review the quality of Duc Phuc Limousine bus

Duc Phuc Limousine bus is rated with an average score of 4.9/5 based on 197 reviews of customers who have experienced this bus company's service.

h. Information of Duc Phuc Limousine companies

Duc Phuc Limousine bus office at Hanoi:

Check Duc Phuc Limousine bus office address https://vexere.com/en-US/duc-phuc-limousine-bus
Phone number for booking bus tickets Hanoi Thai Nguyen - Thai Nguyen: 1900 888684

🚌 3 Ha Lan bus : High-quality Hanoi Thai Nguyen - Thai Nguyen bus

a. Introduction of Ha Lan

The Ha Lan bus from Hanoi to Thai Nguyen - Thai Nguyen is a limousine company specializing in operating the route from Hanoi to Thai Nguyen - Thai Nguyen and vice versa. Featuring a fleet of vehicles with 100% new investment, the operator is always confident to bring customers the most unforgettable travel experiences. Operating with the motto "Customer is king", the staff of the company Ha Lan bus is always committed to providing passengers with the safest and most comfortable trip. Customer satisfaction is the driving force for the operator to develop and become more and more perfect.

b.Ha Lan's image

Xe Ha Lan : Xe đi Thai Nguyen - Thai Nguyen chất lượng cao từ Hanoi

c. Departure and arrival time of Ha Lan bus to Thai Nguyen - Thai Nguyen from Hanoi

Departure time in Hanoi: 07:30, 08:30, 09:30, 10:30, 11:30, 12:30, 13:30, 14:30, 15:30, 16:30
Arrival time in Thai Nguyen - Thai Nguyen: 9:18, 10:18, 11:18, 12:18, 13:18, 14:18, 15:18, 16:18, 17:18, 18:18
Time for Ha Lan bus to ride to Thai Nguyen - Thai Nguyen from Hanoi is about: 1.8 hours

d.Ha Lan bus pick-up points

Số 87 Đại Cồ Việt
VP 180 Trung Kính
Văn phòng 286 Nguyễn Trãi
103 Nguyễn Hoàng
Công viên Thiên Đường Bảo Sơn
Khu đô thị Bắc Linh Đàm
Văn phòng 245 Quang Trung
VP 286 Nguyễn Trãi

e. Ha Lan bus drop-off points

42A Đường Bắc Sơn

f. Ha Lan bus fares from Thai Nguyen - Thai Nguyen from Hanoi

seater 140000đ/ticket
limousine 140000đ/ticket

g. Review the quality of Ha Lan bus

Ha Lan bus is rated with an average score of 4.8/5 based on 960 reviews of customers who have experienced this bus company's service.

h. Information of Ha Lan companies

Ha Lan bus office at Hanoi:

Check Ha Lan bus office address https://vexere.com/en-US/ha-lan-bus
Phone number for booking bus tickets Hanoi Thai Nguyen - Thai Nguyen: 1900 888684

🚌 4 Halan Buslines bus : High-quality Hanoi Thai Nguyen - Thai Nguyen bus

a. Introduction of Halan Buslines

The Halan Buslines bus bus service is rated as one of the top choices for passengers on the from Hanoi to Thai Nguyen - Thai Nguyen route. The bus operator pays great attention to service quality and customer satisfaction. Therefore, we always listen and improve to bring customers the most perfect service. With a fleet of high-quality vehicles, equipped with comfortable and luxurious interiors, Halan Buslines bus from Hanoi to Thai Nguyen - Thai Nguyen is committed to providing customers with extremely comfortable moments of rest and entertainment during the journey. migration process.

b.Halan Buslines's image

Xe Halan Buslines : Xe đi Thai Nguyen - Thai Nguyen chất lượng cao từ Hanoi

c. Departure and arrival time of Halan Buslines bus to Thai Nguyen - Thai Nguyen from Hanoi

Departure time in Hanoi: 05:30, 06:20, 07:10, 07:50, 08:50, 09:35, 10:15, 10:40, 11:10, 12:15
Arrival time in Thai Nguyen - Thai Nguyen: 7:18, 8:08, 8:58, 9:38, 10:38, 11:23, 12:03, 12:28, 12:58, 14:03
Time for Halan Buslines bus to ride to Thai Nguyen - Thai Nguyen from Hanoi is about: 1.8 hours

d.Halan Buslines bus pick-up points

Bến xe Mỹ Đình

e. Halan Buslines bus drop-off points

Bến xe Trung tâm Thành phố Thái Nguyên

f. Halan Buslines bus fares from Thai Nguyen - Thai Nguyen from Hanoi

seater 80000đ/ticket

g. Review the quality of Halan Buslines bus

Halan Buslines bus is rated with an average score of 4.7/5 based on 271 reviews of customers who have experienced this bus company's service.

h. Information of Halan Buslines companies

Halan Buslines bus office at Hanoi:

Check Halan Buslines bus office address https://vexere.com/en-US/halan-busline-bus
Phone number for booking bus tickets Hanoi Thai Nguyen - Thai Nguyen: 1900 888684

🚌 5 Bao Phong bus : High-quality Hanoi Thai Nguyen - Thai Nguyen bus

a. Introduction of Bao Phong

With a commitment to bringing safety and comfort to all passengers, Bao Phong bus has become the top priority choice for many customers on the route to Thai Nguyen - Thai Nguyen from Hanoi . In addition to a fleet of high-quality vehicles, the bus company Bao Phong bus from Hanoi to Thai Nguyen - Thai Nguyen also owns a team of professional, experienced drivers who are always ready to support passengers until the trip ends.

b.Bao Phong's image

Xe Bao Phong : Xe đi Thai Nguyen - Thai Nguyen chất lượng cao từ Hanoi

c. Departure and arrival time of Bao Phong bus to Thai Nguyen - Thai Nguyen from Hanoi

Departure time in Hanoi: 05:30, 05:40, 06:15, 06:25, 07:00, 07:30, 07:45, 08:00, 08:15, 08:40
Arrival time in Thai Nguyen - Thai Nguyen: 7:18, 7:28, 8:03, 8:13, 8:48, 9:18, 9:33, 9:48, 10:03, 10:28
Time for Bao Phong bus to ride to Thai Nguyen - Thai Nguyen from Hanoi is about: 1.8 hours

d.Bao Phong bus pick-up points

Sân bay Nội Bài (Ga Nội Địa)
Văn phòng Hà Nội

e. Bao Phong bus drop-off points

Văn phòng Thái Nguyên

f. Bao Phong bus fares from Thai Nguyen - Thai Nguyen from Hanoi

seater 80000đ/ticket

g. Review the quality of Bao Phong bus

Bao Phong bus is rated with an average score of 4.4/5 based on 405 reviews of customers who have experienced this bus company's service.

h. Information of Bao Phong companies

Bao Phong bus office at Hanoi:

Check Bao Phong bus office address https://vexere.com/en-US/bao-phong-limousine-bus
Phone number for booking bus tickets Hanoi Thai Nguyen - Thai Nguyen: 1900 888684

Route introduction Thai Nguyen - Thai Nguyen from Hanoi

1. Quality and reviews of Hanoi Thai Nguyen - Thai Nguyen bus / coach companies

The best bus / coach Hanoi to Thai Nguyen - Thai Nguyen has a quality classification based on a customer rating from 1 to 5 {1: worst, 5: best} with criteria such as: bus quality, Punctuality, Quality service on Vexere.com. This review is written directly by customers who have experienced the bus companies Hanoi to Thai Nguyen - Thai Nguyen.

Quality of Hanoi Thai Nguyen - Thai Nguyen bus is rated with an average score of 4.7/ 5 reviewed by 1836 passengers. In which, the best bus company from Hanoi to Thai Nguyen - Thai Nguyen is rated 5.0/5 by 3 is Thuong Lan.

2. The bus / coach fares from Hanoi to Thai Nguyen - Thai Nguyen

Currently, according to the latest update of Vexere.com, the bus ticket price to Thai Nguyen - Thai Nguyen from Hanoi ranging from 68000 VND - 150000 VND. In which, Thường Lan has the cheapest bus ticket price, only 68000 VND. Book genuine Hanoi Thai Nguyen - Thai Nguyen at Vexere.com for the affordable price, reserved seats are 100% guaranteed and free ticket exchange support. Call 1900 888684. for free consultation, booking and exchange of tickets. .

3. Different types of Hanoi to Thai Nguyen - Thai Nguyen buses:

Limousine bus Hanoi to Thai Nguyen - Thai Nguyen (or limousine van) with 9 seat have convenient, luxurious interior

This is a 9-seat limousine bus (limousine van) modified from a 16-seat bus Hanoi Thai Nguyen - Thai Nguyen. Interior is reworked with European standard leather seats, not only smooth for a long journey, but also cool and not as secretive as normal leather seats. Along with that, This limousine van have comfortable reclining seats, many modern conveniences such as television, mini fridge, usb socket, power outlets, plug sockets, reading lights, high-end sound system. There is a separate partition between the cockpit and the passenger compartment. The distance between the seats is very comfortable, not crammed. Always meet the needs of luxury, comfort, spacious and convenience in travel.

This is a Hanoi Thai Nguyen - Thai Nguyen bus type that supports free pick-up / drop-off in the city of Hanoi which is very convenient for tourists

Best Hanoi Thai Nguyen - Thai Nguyen limousine bus (limousine van) generally rated good with an average rating of 4.9/5 based on 1160 reviews of passengers who have booked and used the limousine bus from Hanoi to Thai Nguyen - Thai Nguyen.

The cheapest bus ticket price for a limousine bus Thai Nguyen - Thai Nguyen to Hanoi is 68000VND of the bus company Thường Lan. Depending on your seating position and the promotion, the fare for Hanoi Thai Nguyen - Thai Nguyen bus may be cheaper.

Bus/Coache Fares and Schedules/Timetables From Thai Nguyen to Hanoi
Bus companies	Timmings	Pick up locations	Drop off location	Bus ticket price	Rating
Thuong Lan	15:30 - 15:30	Quốc lộ 6, Phú Lâm		68.000đ	5/5
Duc Phuc Limousine	05:00 - 21:00	Sô 94 Đường Láng	257 Thống Nhất	140.000đ	4.9/5
Ha Lan	05:00 - 21:00	Số 87 đường Đại Cồ Việt	Số 42a, Đường Bắc Sơn	140.000đ	4.8/5
Halan Buslines	05:30 - 19:10	20 Phạm Hùng	Bến xe Trung tâm TP. Thái Nguyên, ngõ 398 đường Thống Nhất	80.000đ	4.7/5
Bao Phong	05:30 - 20:25	Tầng 1, Sảnh E, Cửa đến E1.5	Cổng bến xe trung tâm Thái Nguyên, Ngõ 398 Thống Nhất	80.000đ	4.4/5

What is the fastest and most prestigious way to book a bus ticket to Thai Nguyen - Thai Nguyen from Hanoi?

The fact that there are a lot of Bus from Hanoi to Thai Nguyen - Thai Nguyen gives visitors a variety of choices. This can also be a disadvantage that makes customers not know which garage is right for them. In addition, the guarantee of booking, getting a favorite seat after booking a bus ticket to Thai Nguyen - Thai Nguyen from Hanoi between the garage and the customer after booking directly is not 100% guaranteed.

So in order to easily compare prices, see quality evaluation of the outgoing cars, get the highest benefit, enjoy many discounts on bus tickets Hanoi Thai Nguyen - Thai Nguyen, passengers can book ticket at website Vexere.com - The best quality and most prestigious bus booking system in Vietnam, guaranteed 100% reservation. For any purchase of bus tickets to Thai Nguyen - Thai Nguyen from Hanoi at Vexere.com Vexere is committed to solve the problem. Discount coupons or refunds will depend on each case.

Instructions for booking tickets at Vexere.com:
Step 1: Visit the Vexere website or download the Vexere app on CH Play or App Store.
Step 2: Select your departure point, destination, departure date, then select "FIND TICKETS".
Bước 3: Select the bus company to go to {Destination} from Thai Nguyen - Thai Nguyen, the appropriate departure time. Click on the time slot you want to go to proceed with your booking.
Step 4: Select the seat / bed, pick up point, drop off point and enter passenger information when booking a bus ticket for Hanoi to Thai Nguyen - Thai Nguyen
Step 5: Choose the appropriate form of ticket payment and proceed to pay for the ticket.

The booking and payment for bus tickets to Thai Nguyen - Thai Nguyen from Hanoi is also very simple and convenient when Vexere.com supports up to 06 different payment methods, including:

Pay with cash at convenience stores and supermarkets near your home.
Payment by international payment cards (Visa, Master Card, JCB).
Payment by ATM card registered for online payment (Internet Banking).
Payment by bank transfer.
Besides, you can also pay for tickets through wallets Momo, ZaloPay, AirPay, VNPay, ...

https://vexere.com/vi-VN/booking/ticketinfo

See detailed instructions, illustrated by images here

Book bus tickets Tet 2026 from Hanoi to Thai Nguyen

Bus tickets Tet 2026 from Hanoi to Thai Nguyen has not been announced yet. Vexere.com There will be a notice to tell you about bus a ticket for Tet 2026 including ticket price, schedule, date and time of ticket sales of coaches traveling the route Hanoi - Thai Nguyen and Thai Nguyen - Hanoi as soon as information from companys.