Guangzhou City, Guangdong Province, located in the south, the lower reaches of the Pearl River and bordering on the South China Sea, is the headquarters of the Southern Theater, a national logistics hub, a national comprehensive gateway city and an international comprehensive transportation hub. It is the first batch of coastal open cities, the southern gateway to the world, the central city of Guangdong-Hong Kong-Macao Greater Bay Area and the Pan-Pearl River Delta Economic Zone, and the hub city of the belt and road initiative.