C817 Help from Shen Gongju

Although Li Zhi had already created the bed crossbow, the bed crossbow had only been used once when dealing with Li Ran's transformation. It was never revealed to the public, could it be that someone stole the information from his armory?

But right after, the words written on the back let Li Zhi know that his guess was wrong. There was a carriage that was around two zhang long and one zhang wide