Guan Yu was still a little dissatisfied, and said, "I just tried one. Is it normal for me to fail? Perhaps regular testing will accumulate more experience. Besides, it's normal for someone to use a wooden machine. If it's metal, it won't work, will it?

"You're wrong again. To your present practice, if you often fail in refining, it will affect your mood and affect your mood, and it will affect the speed of your next practice. It will often fail, and it will hit the heart very hard."

Master Jiu went on to say, "I said that whatever it is, it can be used to refine chemical apparatus. You...