C164 A Piece of Trash?

The boss answered with a respectful expression. He picked up the cutting machine and gently placed it on the spot Old Master Chen was pressing on. The edge of the blade was slightly opened at a slanted angle. He held his breath and gently polished it.

After grinding like this for more than ten minutes, Old Master Chen suddenly called out to the boss. He sighed and said, "Don't grind it yet