Shibaozhai is a tower nearly 56 metres in height leaning against the Yuyin Hill and is now encircled by a moat after the Three Gorges Dam project in 2003. Legend has it that the mountain was a stone left by Nuwa, a goddess who created humans and mended the wall of heaven with five colored stones. During the Ming Dynasty, it gained notoriety as a stronghold taken by a gang of farmers, earning it the name Shibaozhai (zhai meaning fortress).