The Dings' mountain Mao Zedong Reading Office, known as the "Banana Stone Mountain House" during the Kangxi Dynasty of the Qing Dynasty, was purchased by Kang Youwei in 1917 and rebuilt the villa Kangzhuang, which was later merged into "Liu Zhuang". In the 50s of the 20th century, Mao Zedong visited Liu Zhuang many times, and often went here to read newspapers and periodicals and talk about poetry. The Dingjiashan Mao Zedong Reading Office is also the place where Mao Zedong drafted China's first constitution, and it is an important place to commemorate Mao Zedong in Hangzhou. The existing building sits west facing east, sits on a bluestone platform, covers an area of 234 square meters, a one-story wooden structure, "I" shaped plan, five rooms wide, hanging hilltop and spire combined roof.