C509 Siege Apparatus

"Hehe!" Really! "With just a few changes, the originally simple cloud ladder can now be so easily used!" Huang Xu chuckled, looking at the ladders fixed to the city walls, he turned to Li Yan and said: "It's just adding a barb and a few wheels at the bottom, that's how convenient it is to make the ladders work! "Hehe, in the past when we were at war, didn't these ladders only have one use? I