An agricultural expert (L) shares greenhouse vegetable production know-hows with farmers in Daxing district of Beijing, capital of China, March 15, 2018. [Photo/Xinhua]
A farmer manages greenhouse vegetable crops in Daxing district of Beijing, capital of China, March 15, 2018. [Photo/Xinhua]
A farmer grows vegetables inside a water-efficient greenhouse in Daxing district of Beijing, capital of China, March 15, 2018. [Photo/Xinhua]
Farmers prepare vegetable seeds for greenhouse production in Daxing district of Beijing, capital of China, March 15, 2018. [Photo/Xinhua]
