October 16th is World Food Day, and the week of World Food Day is China's Food Security Awareness Week. The theme of this year's National Food Security Awareness Week is "Implementing the Great Food Concept to Ensure Food Security". Everything is leisurely, and eating is the most important thing. Food security is the 'greatest of the country'. Accelerate technological innovation and build a diversified food supply system. The fundamental solution to the problem of eating lies in technology. To practice the concept of big food, it is necessary to improve and strengthen the support for agricultural technology innovation, implement the strategy of storing grain in the ground and storing grain in technology, open up new fields and new tracks, shape new driving forces and advantages, and accelerate the breakthrough in food supply and qualitative leap. To practice the concept of big food, we need to play the leading role of technological innovation, strengthen basic and cutting-edge research, promote key core agricultural technologies, strengthen agricultural technology support, improve food production and quality, increase food diversity, achieve a balance between supply and demand of various types of food, and better meet the increasingly diverse food consumption needs of the people. Deeply implement the action of revitalizing the seed industry, accelerate the industrialization of biological breeding, vigorously cultivate breakthrough varieties with high yield, high quality, and stress resistance, optimize and strengthen the seed "chip", achieve self-reliance and self-reliance in seed technology, and independently control seed sources, ensuring food security from the source. Vigorously developing biotechnology, utilizing modern biotechnology methods such as biological breeding and synthetic biology, exploring the development of alternative protein and other new food raw materials, exploring new food resources, cultivating strategic emerging biological industries, promoting the industrial application of biotechnology in the agricultural field, expanding from traditional crop and livestock resources to richer biological resources, extending the industrial chain, enhancing the value chain, and expanding the space for agricultural development, Build agriculture into a major industry and firmly establish the bottom line of food safety. Strengthen adapting measures to local conditions and expand diverse sources of food. Ask for food and delicacy from forests, grasslands, rivers, lakes, and seas, as well as heat and protein from plants, animals, and microorganisms. From the reality of our country, we have raised nearly one fifth of the world's population with 9% of the world's arable land and 6% of the world's freshwater resources, which is both a miracle and a challenge. The shortage of water and soil resources, especially the intensification of water shortage, has increased the pressure on China's food security. Therefore, we cannot just focus on limited arable land. We need to broaden our thinking and break away from the traditional concept of food supply, breaking the traditional agricultural thinking mode that food mainly comes from arable land. On the premise of protecting the ecological environment, we should develop food resources in all directions and multiple ways, that is, expand from arable land resources to the entire land resources, fully release the food production capacity hidden in China's vast natural resources, and promote the diversification of food source channels. Fully utilizing the significant advantages of China's diverse agricultural resources, deeply exploring the potential resource endowments of various regions, while ensuring the original main grain yield, based on the diversity of agricultural resources and climate suitability advantages, vigorously cultivating regional characteristics