Local farmers busily lift traps and catch selenium-rich hairy crabs at a reservoir in Zhangye, Northwest China's Gansu Province, on September 9, 2024. As the Mid-Autumn Festival approaches, locals have entered a busy harvest season for hairy crab. This year, over 100,000 kilograms of hairy crabs will be airlifted from Zhangye to localities across the country. Photo: VCG