In Linjiangmen, Jie Fangbei, you can take the No.502 (high-speed) bus from Jie Fangbei to Beibei directly. The fare should be between 10 and 12 yuan.
Shapingba:
At Huayu Square (opposite the North Railway Station), you can take a bus (expressway) from Shapingba to Beibei. Ticket price 10 yuan.
University town:
You can take the shuttle bus (University Town-Chongqing Normal University) to Shapingba first, and then take the bus (Shapingba-Beibei).