I was shocked by the old man's words just now. I didn't realize that the old man could say that the back waves of the Yangtze River push the front waves. I began to wonder, is there the Yangtze River in the world?

No, I've traveled so many places that I haven't seen anything particularly iconic in the world.

The old man has been busy practicing all his life. Only recently has he come out to experience the beauty of the world. The places he has visited should be confined to the surrounding city.

If the world really has the Yangtze River, it is estimated that it is around the...