Then I suggest you take a bus from the airport to Xidan on the first night, and then take a stroll in Xidan in the afternoon. If it's not too far, you can walk to Tiananmen Square or take two stops to see the night view of Tiananmen Square, and then go to Qianmen Street, which is the south of Tiananmen Square, where you can eat something. But don't trust the buses that recommend a one-day tour. If you really want to go to the north exit of Qianmen Street, there is a regular Beijing Tourism Distribution Center. But I advise you not to go. It's really not good to have a rest after eating and visiting the neighborhood at night and find a reasonably priced hotel, just McDonald's! The next morning, the work of the Forbidden City is very close, but it will take all morning. In the afternoon, take 6 14 at the north gate of the Forbidden City and get off at Zhongguanyuan, which means that after visiting Peking University, Peking University is very close to Tsinghua, but I don't think it is necessary to go, so I'd better change to the Summer Palace. Go to Zhongguancun the next morning or take a bus back to the airport in Shanghai, or go to live in Tsinghua of Peking University the first night, and then take 6 14 to the Forbidden City the next day. After visiting the Forbidden City, go to the front door of Tiananmen Square.