The Pearl River Delta region in southern China, including Guangzhou, Shenzhen, and Hong Kong

the Pan-Pearl River Delta economic zone (9+2), comprising nine mainland Chinese provinces (Fujian, Guangdong, Guangxi, Guizhou, Hainan, Hunan, Jiangxi, Sichuan, and Yunnan) plus the Hong Kong and Macau Special Administrative Regions

The drainage basin or valley of the Pearl River and its various tributaries in southern China