Guan Yu said, "Master, I've brought the sketch of the crossbow. The rest is to ask you to find some skillful craftsmen. Under my guidance, they can definitely make it. At that time, if they can produce it in batches, our disciples in Yunqingmen will have a hand in hand. Then, even in the future, we will fight against the demon religion.

"Oh? Are you really so good at what you say? Get it up and let me see it. Xuanming said curiously.

Guan Yu handed up the paper in his hand, Xuanming looked at it and said, "I didn't understand some of it?" It's like a bow and arrow....