This aerial photo taken on April 27 shows villagers working at a vegetable farm in Luanping county, North China's Hebei Province. (Photos: Liang Zhiqing/People’s Daily)

This photo taken on April 27 shows villagers working at a vegetable farm in Luanping county, North China's Hebei Province.

This photo taken on April 27 shows villagers working at a vegetable farm in Luanping county, North China's Hebei Province.

This photo taken on April 27 shows a villager working at a vegetable farm in Luanping county, North China's Hebei Province.