No one knows the authenticity of that story, but when he, Shui Wutong, was already gray-haired and no longer running around on the edge of a knife like in the past, he filled in some of the smaller details of the story.
The people around him just listened to the story in silence without making any reply.
Therefore, what you hear and see here is a story that even the person telling it does not know whether it is true or false. Please take it as a snack to relieve boredom.