How does monsoon circulation affect the climate in China?

The monsoon circulation affecting China is mainly the East Asian monsoon, and its influence on China is as follows: 1. In winter, due to the obvious difference in thermal properties between land and sea, a cold high center-Mongolia-Siberia high is formed on the mainland, and the ocean is low. As a result, a strong northwest monsoon is formed, which is cold and dry, causing low temperature, cold wave, blizzard and other weather in most parts of China, which is not conducive to the growth of crops and will also cause many direct and indirect social and economic losses. 2. In summer, there is an Asian low pressure on land and a high pressure on the ocean, which forms a warm and humid southeast monsoon and brings rich water vapor. The same period of rain and heat is beneficial to agricultural development. The disadvantage is that different summer monsoon intensities can easily lead to droughts and floods in the north and south.