Before the lake freezes, the moving ice layer is pushed to the shore by water waves and smashed into pieces, and then pushed around by wind and waves. The edges and corners of the fragments gradually became smooth after being pushed. When the lake freezes on the surface of the debris, it will further condense with the debris as the core, making them bigger and smoother, and finally forming this smooth ice hockey.

This is a natural phenomenon. The scene is the solidification of countless ice balls and snow balls, which are spread all over the shore of the lake, just like big dumplings.

In some foreign countries, there are scenes similar to "ice jiaozi" in the four seas lakes, such as near-root lake in the United States and a beach on Luotuo Island between Finland and Sweden.