You can't do it.

Still grinding zkj? You're falling behind, brothers. It's a wear of two ten-thousandths. Come try a new method, using zkj and koge for double grinding. It's too fast, didn't expect it to exceed by so much. Looking closely, double grinding not only takes less time but also has a wear of one ten-thousandth. However, it is important to note that grinding should be done when prices are stable. Go try it out, and if it works well, remember to give it a thumbs up later, brothers.