The Centennial School Bell, fully named "Centennial school anniversary commemorative clock", was cast in 2005 and is donated by the Beijing Alumni Association for the Alma Mater, currently hanging in the center of Princess Building Square in the east campus. The large clock is designed with modern advanced technology, with a simple and atmospheric shape and a rich and melodious voice. After the 100th anniversary of the school, the countdown to the New Year's Eve bell has become a unique style on campus scenery. This century old school clock weighs 1200 kilograms, with a body height of 1.5 meters and a lower diameter of 1.2 meters. There is a relief sculpture of the old gate of "Agricultural University" cast between the large bell and palace grids, and a relief sculpture of the dragon character cast on the other side, with an ancient plowshare cast on the lower edge. The surface of the clock body is engraved with a four character inscription of 432 characters, written by Professor Bai Huawen of Peking University and written by Mr. Wu Xiaoru, which records and reflects the development process of China Agricultural University over the past century.