Actually, it's easy. Out of the train station, walk a few tens of meters to the right front of the train station. When you arrive at the station, you can find the No.503 high-end bus with the words "Chongqing North Station ~ Beibei". 1Before 0 yuan, Southwest University got off at several points in 40 minutes, and the flight attendants would remind you (such as Xinongmen, Tianshengqiao, Dali Hall, etc.). Forget about other buses, taxis and trains. Unrealistic.
In short, the road is on my lips. When I first returned to school, I also asked people all the way to find the 503 bus stop (although it was in the station, it was hard to find a car). Have a nice trip ~