No.353 Benjing Avenue. According to the Baidu map, Hangzhou g21 Summit Club, namely Hangzhou International Expo Center, is located at No.353 Benjing Avenue, Qianjiang Century City, Xiaoshan District, Hangzhou, Zhejiang Province. The total construction area of Hangzhou International Expo Center is 851,111 square meters. The main building consists of five floors above ground and two floors underground. It is a complex of conferences, exhibitions, restaurants, tourism, hotels, businesses, office buildings, main contractors and other diversified formats.