The small artificially built Swan Lake in Hefei, Anhui Province, drowned so many people more than ten years after its completion.

Not only is it a shady story, there is a huge secret hidden here. Swan Lake turns out to be not a lake but a formation. This formation was jointly arranged by more than 40 Taoist masters more than 200 years ago. The purpose was to suppress the falcon grubs underground. Later, during the Anti-Japanese War, the Japanese used artillery to destroy the formation, resulting in heavy casualties. Later, 8 elders of the Southern Dysprosium Taoist Sect took 66 disciples out to repair the formation. It took more than half a month for 6 to die. Only an elder managed to repair it, but they had to sacrifice human beings every year... I can't make it up.