The ancients often said that food is the most important thing for the people, and a country must have enough food to make its people live and work in peace and contentment, otherwise it will easily lead to unrest. In the history of our country, farmers often revolted because they didn't have enough to eat and overthrew the whole dynasty. This situation lasted for thousands of years and still plagued our country until the last century.

Many western experts believe that China's large population will easily lead to unrest, and all countries in the world should remain vigilant and provide assistance to China when necessary. Later, because of the appearance of hybrid rice, the grain output of China increased rapidly, which not only solved the grain problem, but also exported it to a certain extent, helping many relatively backward countries.

With the continuous progress of science and technology, China has solved a Millennium historical problem and successfully cultivated100000 mu of fertile land. When the United Nations learned of this incident, it couldn't sit still and sent someone to contact China directly, hoping that China could generously share some experiences. This historical problem is the management of saline-alkali land. Under normal circumstances, this saline-alkali land cannot grow food, which is very unfavorable to the development of the whole country.

Due to some historical problems, there are a lot of saline-alkali land around Bohai Sea in China. This land is so barren for China that it is impossible to grow food and support the people around it. Therefore, in the past few decades, grain has often been transferred from other regions to support the development here.

Before treating saline-alkali land, countries all over the world usually use a lot of fresh water for irrigation, trying to dilute the saline-alkali components inside. However, the Bohai Rim region of China is a place lacking fresh water. If this method of fresh water irrigation is used to control saline-alkali land, a large amount of fresh water resources must be transferred from other places. This project is huge and a very heavy burden for the whole country, so we must find ways to deal with the saline-alkali land problem here by more convenient means.

After years of hard work and exploration, our researchers finally summed up a solution, specifically, to irrigate a lot of salt water here in winter. Because of the cold, the salt water in saline-alkali land will freeze quickly, and when the spring blossoms, the melted ice water will carry some saline-alkali components into the deeper underground. After several such treatments, the local saline-alkali components will decrease rapidly and normal grain production can be carried out.