Xisha Islands is one of the four islands in the South China Sea, and now belongs to Hainan Province. Located in the southeast of Hainan Island. With Yongxing Island as the center, it is about 330 kilometers away from Yulin Port in Sanya City and about 330 kilometers away from Qinglan Port in Wenchang County. Xisha Islands are distributed over a sea area of more than 500,000 square kilometers, with more than 40 islands and reefs, mainly concentrated in two groups: Xuande Islands in the east and Yongle Islands in the west. Among the four major archipelagos in the South China Sea, there are many lands exposed from the sea in Xisha Islands, including 22 islands and 7 sandbars, with a total land area of about 10 square kilometers. These islands and sandbars are as follows:

Name of Island Fishermen commonly known as land area (square kilometers)

1, Treasure Island Tail Island, Tail Island 0.36 2, Ganquan Island Round Island, Yuanzhi 0.30 3, Coral Island Laorough Island, Laorough Island 0.3 1 4, Quanfu Island Quanfu Island, Quanfu, Qushou 0.02 5, Yagong Island Yagong Island 0.0/kloc-0. Yinyuzai Yinzhizai 2000 (m2) 8, Xiansheshi Xianshe, Xianqie Island 3000 (m2) 9, Shiyu Shiyu 2000 (m2) 10, Sijiangmen, SiDao Jiang and Shijiangzhi 0.21kloc. Sanjiaozhi in Guangjin Island, 0.06 13 in Xiaosanjiao Island, Baishuzai in Panshiyu Island, Baizhizai in Baijiao Island, 0.40 14 in Zhongjian Island, Banzhouzhi, Luodao 1.20 15 in Yongxing Island, etc. Kloc-0/7, South Island Sanchi 0. 17 18, Middle Island Erdao 0. 13 19, North Island Changzhi, Long Island 0.04 20, Zhaoshu Island Shudao, Hidden Island and Ship Hidden Island 0.222. Shuangfan 0.04 23, basket-shaped sandbar basket-shaped sandbar 0.0 1 24, Dongxin sandbar 4000 (m2) 25, Xixin Shuizhou 2000 (m2) 26, Nanshuizhou 0.06 27, Zhongshazhou 0.05 28, Beishazhou 0.02 29 and Xishazhou 0.04.

In addition to these island sandbars exposed to the sea, there are more than 10 reefs and shoals in Xisha Islands. Among these islands and reefs, Yongxing Island, with the largest area, is 2.10 square kilometers, followed by Dongdao Island, which is10.60 square kilometers, Zhongjian Island, which is10.20 square kilometers, and the rest are all below 0.4 square kilometers. The rocky island with the highest altitude is13m, and the rest is below 9m, generally1-5m. Gaojianshi is the only volcanic island exposed to the sea.

Xisha Islands is located in the middle of the tropics, with a tropical monsoon climate, which is hot and humid, but there is no heat. Taking Yongxing Island as an example, the extreme high temperature is 34.9℃, the extreme low temperature is15.3℃, and the annual average temperature is 26.5℃. Annual rainfall1505mm. Xisha Islands is the most vulnerable area to typhoon.

Yongxing Island is the largest island in Xisha Islands, with an area of 2. 1 km2. It is also the military and political center of Xisha Islands, Nansha Islands, Dongsha Islands and Zhongsha Islands. Now it is the residence of Sansha Municipal Government in Hainan Province. Yongxing Island has beautiful scenery and coconut trees in the shade.

[1] Xisha Islands is one of the famous fishing grounds in China. The vast sea area, dotted with islands and reefs, rich in seafood and many precious species attract a large number of fishermen from all over the country to fish on the island every year.

Yongxing Island is the capital of southwest zhongsha islands, where the government agencies sent by Hainan Province (equivalent to county level) are stationed. The local government exercises effective sovereign jurisdiction over the islands and reefs and their sea areas, and is committed to promoting the development of the island's social and cultural undertakings and marine economy. Yongxing Island is also the transportation hub of southwest zhongsha islands. A maritime traffic line with Yongxing Island as the center has been formed for a long time in history. When Chinese fishermen sail to Xisha Islands or distant Nansha Islands and zhongsha islands, they must transit through Yongxing Island. Now, in addition to the huge fishing fleet, emerging large-scale maritime shipping, air shipping, etc. are centered on the island, connecting various islands and reefs and maritime traffic. Yongxing Island is also the economic center of southwest zhongsha islands. In addition to the powerful marine economic management function, the huge island material distribution function and the rapid development of the island's social economy have played a role in radiating and driving the islands and reefs and their sea areas.

The construction of Yongxing Island changes with each passing day. Marine fishery production, construction, industry, transportation, post and telecommunications, commercial retail, material supply and marketing, finance and insurance, residents' living service and many other industries in the national economy have developed rapidly. The social and cultural undertakings on the island, such as health, radio, film and television, marine research, meteorological forecasting and so on, are increasingly developed; The island has successively completed the construction of power plants, ports, airports, hospitals, seawater purification, freezers, commercial service buildings, office buildings, residential buildings and other projects, forming a relatively complete production and living facilities. Today, Yongxing Island has a beautiful environment, convenient transportation, developed production and happy residents' lives, and is a veritable island new city.