According to Baidu map, it is about 5.3 kilometers from Peking University to Tsinghua University, and the whole journey takes about 19 minutes. There are seven traffic lights. Take a taxi to 20 yuan via Chengfu Road and Heqing Road.
You can also take the bus from Peking University to Tsinghua: take the 60 1 bus for about 20 minutes. Specific route: Walk about 220 meters, take bus No.601to Zhongguanyuan, and then arrive at Tsinghua University West Gate after two stops, and walk about 280 meters to reach the destination.