I Have Exchanged Grain for People Since 1959

[No system + space + decisive killing + no Holy Mother + no CP] I only have 20 kilograms of stick noodles for your daughter, so I can add five kilograms. This little brother saw that my child only has fifteen kilograms of stick noodles, so I changed it. Old man, what do you want to exchange for? No, it won't be of any use to you when you are old. I only want craftsmen and teachers. No one else wants it