1. Announcement No.48, 2011 of the Ministry of Commerce of the People’s Republic of China 2. Announcement No.51, 2011 of the Ministry of Commerce of the People’s Republic of China 3. Announcement No.49, 2011 of the Ministry of Commerce of the People’s Republic of China 4. Announcement No.52, 2011 of the Ministry of Commerce of the People’s Republic of China 5. Circular of the Ministry of Commerce of the People’s Republic of China, on Soliciting Comments on Classified Criteria for Identification of Urban Business Center (Draft) and Drawing Standards for Urban Commercial Network Planning (Draft)