Expanding knowledge: China is one of the 12 countries with the richest biodiversity in the world, with land ecosystems such as forest irrigation, meadows, grasslands, deserts and wetlands, and large marine ecosystems such as the Yellow Sea, the East China Sea, the South China Sea and the Black Dynasty: 34,984 kinds of advanced gifts, ranking third in the world; 6445 species of vertebrates, accounting for13.7% of the total species in the world; More than 10000 species of fungi have been identified, accounting for 14% of the total species in the world. China is rich in biological genetic resources, which is the origin of important crops such as rice and soybean, and also the main origin center of wild and cut fruit trees. According to incomplete statistics, there are 1339 cultivated crops and 1930 wild relatives in China, and the variety of fruit trees ranks first in the world. China is one of the countries with the richest kinds of livestock in the world, with 576 kinds of livestock.