What is the name of the port area composed of nine cities: Hong Kong Special Administrative Region, Macao Special Administrative Region and Pearl River Delta?

The Bay Area, which consists of nine cities in Hong Kong Special Administrative Region, Macao Special Administrative Region and Pearl River Delta, is called Guangdong-Hong Kong-Macao Greater Bay Area.

Guangdong-Hong Kong-Macao Greater Bay Area includes Hong Kong Special Administrative Region, Macao Special Administrative Region and Guangzhou, Shenzhen, Zhuhai, Foshan, Huizhou, Dongguan, Zhongshan, Jiangmen and Zhaoqing.

Guangdong-Hong Kong-Macao Greater Bay Area enjoys superior geographical conditions, surrounded by mountains on three sides and three parallel rivers, with a long coastline, a good port group and vast sea areas. The economic hinterland is vast, and the Pan-Pearl River Delta region has a land area of about 1/5, a population of 1/3 and an economic aggregate of 1/3.

Terrain of Guangdong-Hong Kong-Macao Greater Bay Area:

The Pearl River Delta is surrounded by hills and plateaus on the east, north and west, and the central plain is broad and flat, which can be divided into four types of landforms: Gaoweitian and Gaoshatian (high plains) in the north-central part, which are older and reclaimed earlier, accounting for 51.2% of the total area; The middle sand field and low sand field (low plain) along the southern coast are reclamation plains, accounting for 25.0% of the total area.

Wangtian (ponding land) in the northwest, accounting for 6.6% of the total area; Mulberry-based fish ponds and sugarcane-based fish ponds (basic waters) with artificial landforms are distributed in Shunde and its vicinity, accounting for 17.2% of the total area.

There are more than 160 island mounds with an altitude of 300-500 meters scattered on the plain, most of which are islands in the ancient bay before delta deposition, such as Wugui Mountain, Xiqiao Mountain and Lianhua Mountain. Hong Kong is a typical coastal hilly land, and the plains are mainly concentrated in the north. Macao Peninsula was originally a small island in the sea. Later, the sediment in the upper reaches of the Xijiang River alluvial into sand dikes, connecting the island with the mainland.