Rongcheng Swan Lake every year from November, the northern swans, big lizards and wild ducks fly here over the winter, at most in January of the next year, as many as tens of thousands, in groups, the whole lake is white. White swans are lonely, holy, or lying or standing, or swimming or walking, or flying or running, and more good "players", playing and playing, you chase me, squawking, necking, necking, drum wings singing, squawking is spectacular.