《南齐书·列传·卷五十九》
有二十二条道路可攀援上去，东西两个门，盘绕的道路约七里。上面有山冈水源。
有二十二道可攀缘而升，东西二门，盘道可七里，上有冈阜泉源。
It can be climbed by 22 trails, with two gates in the east and west, and a winding road of about seven miles. There are mountains and lakes on it.