According to the National Bureau of Statistics (NBS), China's total grain output reached 147.39 million tonnes in this year's summer harvest, up 1.43 million tonnes from last year. The provincial reserve granary of Hunan Province located in Quyuan Management District in Yueyang City has nine warehouses with a total storage of 42,000 tonnes of grain. The intelligent system in the warehouses that monitors the temperature, humidity and other data in real-time makes grain storage better.