C246 Exhausted learning

Of course, Zi Yuan was very diligent in learning the art of hidden weapons. At the same time, she discovered that Xue Mingrui was an inventor of the North Vietnamese. Smelting masters, blacksmiths, engineers, and the like, he could do them all. As for the cave they lived in, there were several caves inside, all of which were Xue Mingrui's workshop