Introduction to Xijia Building: Xijia Building was rebuilt in the 9th year of Tongzhi in the Qing Dynasty. It is a one- and two-story mountain-style building. It was named because the afterglow of the setting sun filled the small building. The building is surrounded by water on three sides and surrounded by verandahs. During the Nationalist period, this building served as the offices of the Military Commission and the Military Affairs Bureau of the Presidential Palace.