The site is located on the first floor of Liuzhuang, the West Lake State Guest House in Hangzhou.The No. 1 main building was first built in late Qing Dynasty and rebuilt in 1959 as Mao Zedong's residence in Hangzhou.Pavilion facing West Lake, octagonal, double eaves collection spire, cover small Cheong Wa Dae.With 8 through pillars, the pillars are glass windows, the octagonal pavilion covers an area of 15 square meters.The building was the main place where Chairman Mao drafted China's first constitution and the Sino-US joint communiqué.The Drafting Office of the Sino-US Joint Communiqué has witnessed an important moment in the establishment of diplomatic relations between the two countries and is of great value in their diplomatic history.