Hengqin is an island that lies mostly in Zhuhai, a prefecture-level city and special economic zone in Guangdong Province of the People's Republic of China. It has a population of about 3,000. Parts of Hengqin are leased to Macau by the State Council of the People's Republic of China, starting from 2009, mostly to house the new campus of the University of Macau. In the leased parts of the island, Macau law applies.

Zhuhai is a prefecture-level city located on the west bank of the Pearl River estuary on the central coast of southern Guangdong province, People's Republic of China, on the southeastern edge of the Pearl River Delta. Its name literally means "pearl sea", which originates from the city's location at the mouth of the Pearl River meeting the South China Sea. Zhuhai borders Jiangmen to the west, Zhongshan to the north and Macau to the southeast, and shares maritime boundaries with Shenzhen and Hong Kong to the northeast across the estuary.