Legend goes that the cave was illuminated by a pearl and inhabited by a dragon.
One day a fisherman stole the pearl, but overcome by shame, he finally returned it. Inside the cave, a rock named Sword-Testing Rock hangs from the ceiling, nearly touching the ground. Legend has it that once a general name Fubo tested his sword by cutting what was originally a stone pillar and has left a crevice at the bottom ever since then. On the western side, a flight of steps leads to Kuishui Pavilion and then to the top. From there, one can have a bird's-eye view of the Li River.