The Hong Kong Special Administrative Region (HKSAR) Government has set up an office in Beijing, and trade and economic offices in Guangdong, Shanghai and Chengdu to serve as links between the HKSAR Government and the Mainland. A Liaison Unit is further established in Chongqing under the Economic and Trade Office in Chengdu, and two others in Shenzhen and Fujian respectively under the Economic and Trade Office in Guangdong.