It was the No。2 Building in Linyuan Garden, built for Madam Song Meiling,wife of Chiang Kai-shek。 Chiang ChingKuo, son of Chiang Kai-shek, used to live here in the 1940s。 It also served as the state guest house where Mao Zedong and Wang Ruofei stayed during their famous Chongqing Negotiation with Kuomintang。