On September 23, the autumnal equinox, China will usher in the fifth harvest festival for Chinese farmers. Looking inside and outside the Great Wall, north and south of the Yangtze River, the rice waves fluctuate with the wind, the corn is growing happily, and the fields are spreading a picture of harvest. Food is stable and the world is safe. Against the background of this year's COVID-19, Ukrainian crisis and frequent extreme weather, China's summer grain has increased, and its autumn grain has overcome multiple challenges. There is a foundation and hope for a bumper harvest. "Always tighten the string of food security" This year, the food issue has attracted much attention. The international food price fluctuated at a high level, and the price of agricultural materials increased significantly; The autumn flood last year caused one third of China's winter wheat to be late sown and grow complicatedly. The stability of grain ballast is directly related to the economic fundamentals. We should take precautions, always tighten the string of food security, and always adhere to the principle of "giving priority to ourselves, basing ourselves on the domestic market, ensuring production capacity, appropriate imports, and scientific and technological support". More than 1.4 billion people need to eat, which is China's biggest national condition. In terms of firmly holding the initiative in food security, the general secretary pointed out: "I have repeatedly stressed that more and less food is a tactical issue, and food security is a strategic issue. This year's response to the COVID-19 has contributed greatly to the abundant supply of grain and important agricultural and sideline products, which fully confirms this." Grain production is based on cultivated land, water conservancy is the lifeblood, science and technology is the way out, and policy is the driving force. To do well this year