Introduction to the Yuehan Pavilion: The Yuehan Pavilion was completed in April 1978. The former president of Yenching University, Mr. Mei Yibao (alumnus of grade 22), donated it to commemorate the 15th anniversary of the death of his brother, President Mei Yiqi. On the right side of the garden, there is an inscription by Mr. Mei Yibao. The floor of the pavilion is engraved with the Tsinghua University emblem. The pavilion is circular in shape and has a total of 12 exits. Its special polygonal design can produce a strong echo. This is the appearance of Yuehan Pavilion, surrounded by green trees, which makes it look particularly peaceful.