Of the 360 carp that were said to swim up the Yellow River each year, only one would be able to leap over the falls at Lungmen and transform itself into a dragon. The rest would receive a black dot on the forehead and would have to wait to try again another year.
傳說有三百六十條鯉魚溯黃河而上，抵龍門山下時，唯有一條能跳升龍門而化龍；其他鯉魚則額頭被印上黑點，這一年不能再試。