《水经注·卷六》
汉末赤眉之乱时，郡中属吏刘茂背了太守孙福躲藏在城门西边下面的洞穴中，当夜逃往盂县，就是这地方。
汉未赤眉之难，郡椽刘茂负太守孙福匿于城门西下空穴中，其夜奔盂。即是处也。
During the turmoil of Chimei at the end of Han Dynasty, county clerk Liu Mao carried prefect Sun Fu and hid in the cave below the west side of city gate, and escaped to Meng County that night, which was this place.