The "Ningyuan Building" of No. 70 Quanzhou Road, it turned out to be Lu Jiaxi's former residence. The three-story western-style building, known as "Ningyuan Building", takes the meaning of "quiet and distant", and is the former residence of a famous Chinese scientist and professor Lu Jiaxi, president of the Chinese Academy of Sciences. Lu Jiaxi lived in the Ningyuan Building in Gulangyu Island until 1946, and moved into the faculty dormitory of Xiamen University. Perhaps it was the spirit of "quiet and far" on Gulangyu Island, which achieved his brilliant scientific research career.