School begins. As of September 20, 2023, the university has started school. The university starts school every September 1, and the specific starting time is arranged according to the school notice. For example, Tsinghua University students will return to school in September 2023 17, and Peking University Headquarters will return to school in September 2023 10. Both the Department of Medicine and the Institute of Advanced Studies opened on September 3rd.