Farmers collecting water shield leaves in SW China's Chongqing

Aerial photo taken on July 24, 2019 shows farmers collecting water shield leaves, in Wanshengba area of Huangshui Town, southwest China's Chongqing Municipality. The cultivated area of water shield in Huangshui Town has reached 3500 mu (about 233 hectares). (Xinhua/Wang Quanchao)