The compulsory education system in May 4th 9 is one of China's education systems. Refers to 5 years of primary school and 4 years of junior high school. The main idea is to shorten the primary school from 6 years to 5 years, keep the teaching content unchanged, and extend the junior high school to 4 years. Advocates of this education system believe that primary school students have great potential and can complete the task of primary education within five years; Junior high school students' academic burden is too heavy. Extending 1 year can reduce their academic burden.

Hainan province [1], referred to as "Qiong" for short, is the southernmost provincial administrative region of People's Republic of China (PRC) (PRC) [2], with Haikou as the capital. It is a special economic zone and a free trade pilot zone in China. Located in the south of China, it is bordered by Qiongzhou Strait in the north, Guangxi and Viet Nam in the west, Taiwan Province Province in the South China Sea in the east, and the Philippines, Brunei and Malaysia in the southeast and south respectively. Hainan Province has a total land area of 35,400 square kilometers, including 33,900 square kilometers of Hainan Island and 2 million square kilometers of sea area. By the end of February, 202 1 and 65438+,the forest land area in the province was 34.2486 million mu, the total forest area in the province was 32.9644 million mu, and the forest stock in the province was161kloc-0/2880 cubic meters.