Tourists exchange the garbage for two bottles of water at Mulan Bay of Wenchang, south China's Hainan Province, April 28, 2020. In order to protect the environment and encourage tourists' participation, a waste bank has been established at Mulan Bay where tourists can exchange the garbage they have collected on the beach for gifts including bottled water, coconuts and snacks. [Xinhua/Guo Cheng]

Tourists collect garbage along Mulan Bay of Wenchang, south China's Hainan Province, April 28, 2020. In order to protect the environment and encourage tourists' participation, a waste bank has been established at Mulan Bay where tourists can exchange the garbage they have collected on the beach for gifts including bottled water, coconuts and snacks. [Xinhua/Guo Cheng]

A staff shows a deposit book for the waste bank at Mulan Bay of Wenchang, south China's Hainan Province, April 28, 2020. In order to protect the environment and encourage tourists' participation, a waste bank has been established at Mulan Bay where tourists can exchange the garbage they have collected on the beach for gifts including bottled water, coconuts and snacks. [Xinhua/Guo Cheng]

Tourists collect garbage along Mulan Bay of Wenchang, south China's Hainan Province, April 28, 2020. In order to protect the environment and encourage tourists' participation, a waste bank has been established at Mulan Bay where tourists can exchange the garbage they have collected on the beach for gifts including bottled water, coconuts and snacks. [Xinhua/Guo Cheng]

Aerial photo shows Mulan Bay of Wenchang, south China's Hainan Province, April 28, 2020. In order to protect the environment and encourage tourists' participation, a waste bank has been established at Mulan Bay where tourists can exchange the garbage they have collected on the beach for gifts including bottled water, coconuts and snacks. [Xinhua/Guo Cheng]

(Source: Xinhua)