It takes about 40 minutes to get to Sipailou Campus by school bus from Jiulonghu Campus, and it costs 4 yuan, which is more convenient. In addition, you can take a bus or taxi from the east gate (other gates are ok, usually the east gate) to Baijiahu subway station (Shengtai Road and Heding Bridge are also ok), and then take the subway, which usually takes about an hour or 50 minutes. Generally, you go to the downtown area (or Dingjiaqiao campus is also these two roads).
Sipailou Campus and Dingjiaqiao Community are both in urban areas. First, I don't know about Dingjiaqiao Campus, and it is estimated that students from Jiaotong University will not run between these two places, so I don't need to say more.