A farmer shows harvested grapes in Zhaotan Village of Wangtan Township in Tangshan City, north China's Hebei Province, July 3, 2019. Local authorities encourage farmers to plant grapes to increase income. (Photo:Xinhua)

A farmer harvests ripe grapes in Zhaotan Village of Wangtan Township in Tangshan City, north China's Hebei Province, July 3, 2019. Local authorities encourage farmers to plant grapes to increase income. (Photo:Xinhua)

Farmers harvest ripe grapes in Zhaotan Village of Wangtan Township in Tangshan City, north China's Hebei Province, July 3, 2019. Local authorities encourage farmers to plant grapes to increase income. (Photo:Xinhua)