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China has 160 million hectares of farmland dedicated to growing vegetables. To grow them, farmers use more than 311,000 metric tons of pesticide and 59 million tons of fertilizer a year, said Li Shaohua, director of San'an Sino-Science's Photobiology Industry Institute.

China has a four-tier color-coded system for severe weather, with red the most serious, followed by orange, yellow and blue.

China has issued a guideline on enhancing the safe production of hazardous chemicals to prevent major accidents and protect people's lives and property. The guideline, published on Wednesday, underscores the importance of strengthening risk controls, management, enterprises' responsibilities, fundamental support, guarantees and supervision to ensure the safe production of hazardous chemicals.

China has achieved historic progress in the past five years because the country's development was under the guidance of Xi Jinping Thought, he said.

China attaches great importance to innovative development, and it considers new generation artificial intelligence as the driving force for scientific and technological development, industrial optimization and upgrading as well as major productivity improvements while it strives to achieve high-quality development, President Xi Jinping said on Thursday.