Guangzhou, Shenzhen, Shantou, Jiangmen and Jieyang. According to the query of China Post official website, as of September 5, 2123, in order to unify and standardize the labor dispatch and labor contract (labor outsourcing), postal labor dispatch in Guangzhou, Shenzhen, Shantou, Jiangmen and Jieyang, five cities under Guangdong Branch of China Post Group Corporation, was specially carried out. Guangdong Province, referred to as "Guangdong" for short, is a provincial administrative region of the People's Republic of China, with Guangzhou as its capital.