December 5, A few swans glided on a lake at the Yellow River wetland in Pinglu, Shanxi. Since the coming of winter, thousands of swans have flown one after another to the Yellow River wetland in Pinglu, Shanxi to spend the winter. The Yellow River wetland has become a beautiful "Swan Lake". In recent years, along with the continuous improvement of the ecological environment of the Yellow River wetland in Pinglu, the number of swans coming here to spend the winter has increased year by year. (Photo by Xue Jun/Xinhua) December 5, A few swans rested on a lake at the Yellow River wetland in Pinglu, Shanxi. (Photo by Xue Jun/Xinhua) December 5, A few swans rested on a lake at the Yellow River wetland in Pinglu, Shanxi. (Photo by Xue Jun/Xinhua)