1. dormitory environment. The campus environment of Nan 'an Campus of Chongqing Jiaotong University is not good. There is a dormitory for 12 people in Jingyuan of the campus, and there is no separate bathroom. Each floor has a public place with three pits. In contrast, the campus environment and accommodation in Science City are better.

2. Learning atmosphere. The campus of Chongqing Communications Science City is remote and comfortable, which is suitable for quiet study.