The Hong Kong Special Administrative Region (HKSAR) Government has set up an office in Beijing, and trade and economic offices in Guangdong, Shanghai, Chengdu and Wuhan to serve as links between the HKSAR Government and the Mainland. Liaison Units are further established in Liaoning and Tianjin under the Beijing Office, in Shenzhen and Fujian respectively under the Economic and Trade Office in Guangdong, in Chongqing under the Economic and Trade Office in Chengdu, in Shandong under the Economic and Trade Office in Shanghai, and in Hunan and Henan under the Economic and Trade Office in Wuhan.