Massive windmills churn energy in Dongying city, East China's Shandong province. [Photo/WeChat account: wenlvdongying]

As temperatures rise in the summer, various bright colors appear on the surface of a salt lake in Dongying, Shandong province. [Photo/WeChat account: wenlvdongying]

The Yellow River Delta National Nature Reserve is witnessing a growing number of migratory birds in recent years, which is a sign that the ecological environment in the reserve is becoming better and better. [Photo/WeChat account: wenlvdongying]