The water boiled in Tianmen is called "mystery" because there are many unexplained phenomena. Generally speaking, the flood season is in the rainy season, and there will be some floods and other phenomena when the rainfall is relatively heavy. But this spectacle always appears in the dry season, and in the case of drought and no water, water will boil. This kind of spectacle is irregular, sometimes once every ten years, sometimes once every several decades, each time lasting 15-45 minutes, it will return to calm and leave no trace.

But since it is a waterfall, there should be a source. This is an unchangeable natural law, but every time Tianmen Mountain turns over the water, it seems to appear out of thin air and disappear out of thin air.

Another point, which is also the most difficult to explain and has no scientific basis, is that every time Tianmen Mountain falls into the water, it is closely related to the time of some historical events in China.

1949 recorded the first capsizing of Tianmen River. The People's Republic of China (PRC) (PRC) was established shortly after the flood.

1965, Tianmen turned over the water for the second time, and soon, the Cultural Revolution broke out in an all-round way.

1976, after the third Tianmen water transfer project, a devastating Tangshan earthquake occurred, which made the world feel sorry for it.

Every time I meet these amazing coincidences, it casts a mysterious color on Tianmen Mountain over time and becomes a mystery in the hearts of local people.