There are many trains from Xi 'an, but the most economical one is the 2334 train from Xi 'an to Guiyang.
/kloc-departs from Xi' an at 0/5: 45, runs 14 hours and 37 minutes, and arrives at Chongqing Caiyuanba Railway Station at 6: 22 the next day. If you buy a train ticket with an admission notice, it's 27.5 yuan at half price, which is the cheapest.
Turn right from the railway station and walk for about 200 meters, next to Chongqing coach station. Go in and buy a bus ticket to Hechuan. Highway, 27 yuan, 25 yuan without insurance. No one takes the 508 bus at all now. Take the old national road, the car is rotten, slow and hot.
There should be a reception point at the railway station before school starts, and you can also go there for consultation. There is also a school bus to and from Chongqing and Hechuan every day.
Get off at Hechuan Bus Station, take a taxi (3 yuan doesn't jump the meter there) or a tricycle (all the way to 2 yuan), and tell the driver to go to Hailai College (what Hechuan people call Shi Chong Foreign Trade College).
Precautions for freshmen: The one upstairs is very good, and the introduction to Hechuan is also very practical and objective.