The city of Dongying in East China's Shandong province, situated at the estuary of the Yellow River, has made major strides in ecological protection in recent years, becoming a "city of wetlands". During fall, the drastic variations in temperature from day to night cause the halophytes growing on the beach to turn from green to red. [Photo/WeChat account: SHIJUESHENGLI]

Dongying in East China's Shandong province, situated at the estuary of the Yellow River, has made major strides in ecological protection in recent years, becoming a "city of wetlands". [Photo/WeChat account: SHIJUESHENGLI]

Wetland protection efforts have proved successful in Dongying in East China's Shandong province. [Photo/WeChat account: SHIJUESHENGLI]