The island of incense in the Republic of China is Hong Kong. Hong Kong is called Xiangjiang, Xiangdao and Pearl of the Orient. Hong Kong, referred to as "Hong Kong" for short, is the People's Republic of China (PRC) Special Administrative Region. It is located in the south of China, east of the Pearl River Estuary, facing China and Macau across the sea in the west, Shenzhen in the north and Wanshan Islands in Zhuhai in the south. Its regional scope includes Hong Kong Island, Kowloon, New Territories and 262 surrounding islands, with a total land area of 1 106.66 square kilometers and a sea area of 65,438 square kilometers.

The topography of Hong Kong is dominated by hills, and the highest point is Tai Mo Shan, which is 958 meters above sea level. Hong Kong has little flat land, and about 20% of the land belongs to lowlands, mainly concentrated in the northern New Territories, namely Yuen Long Plain and Fanling Lowland, which are alluvial plains naturally formed by rivers.

Hong Kong has a maritime subtropical monsoon climate with four distinct seasons and an average annual temperature of 23.3 degrees. The temperature may drop below 10 degrees in winter and rise above 3 1 degrees in summer. Rainfall is concentrated from May to September, accounting for about 80% of the annual rainfall. The annual rainfall is abundant, and the flowers are fragrant in all seasons. It is warm and foggy in spring, hot and rainy in summer, sunny in autumn and slightly dry and cold in winter.

High-rise buildings in the urban area of Hong Kong are concentrated and densely populated, and the microclimate formed is easy to produce heat island effect, which leads to obvious temperature difference between urban and suburban areas.

Hong Kong is in a humid subtropical environment with abundant runoff and developed surface water system. But the water system is limited and there are no big rivers.