I can only discuss it with you. The main factor we set at that time was the number of rice-beating windows, while other factors, such as the speed of rice-beating and the price, were set to be constant. . . Then I somehow figured out the satisfaction function with the number of windows as independent variables, and took the point with the greatest satisfaction. Other factors are basically ignored, and LZ can add some other factors' weights. But don't underestimate, this factor alone has written 15 pages.