Hainan Province is located at the southernmost tip of China. The outline of the island looks like an oval Sydney, and its long axis runs from northeast to southwest, about 290 kilometers long. It is about180km wide from northwest to southeast. The jurisdiction of Hainan Province includes the islands and reefs of Hainan Island, Xisha Islands, Nansha Islands and Zhongsha Islands and their sea areas.

Geographical location introduction

East longitude108 37'-1103', north latitude1810'-2010', north

The tectonic uplift of Hainan caused by geological tectonic movement is the continuous uplift of the central part of Hainan Island, which gradually forms the geomorphological characteristics of Hainan Island. The mountain is located in the middle, surrounded by hills, terraces and plains. Average elevation of Hainan Island120m. Mountains over 500 meters account for 25% of the island, and plains and terraces over 100 meters account for two-thirds.