A farmer arranges newly-harvested hotbed chives at Zhangjiadaping Village in Xigu District of Lanzhou, capital of northwest China's Gansu Province, Dec. 12, 2020. (Xinhua/Ma Sha)

Farmers harvest hotbed chives at Zhangjiadaping Village in Xigu District of Lanzhou, capital of northwest China's Gansu Province, Dec. 12, 2020. (Xinhua/Ma Sha)