If you want to raise your fattening pigs, you must improve them and choose the best varieties and the best cross combinations. Ternary hybridization is a binary sow produced from the cross of Yorkshire, and then the parent of Duroc, the piglets produced are internationally and domestically recognized as excellent finishing pigs. Each farm or professional household can be based on their economic strength. The powerful foreign breeds that can be introduced use the hybrids of Du Changda and Du Dachang, and are called the Yang Sanyuan piglets for fattening. Or go to some large-scale pig farms to purchase three-yuan pigs for fattening. Poor economic strength can be achieved by using local sows and cross-breeding pigs to crossbreed. Crossbreds such as Changda and Du Daben are used to produce commercial pigs. Or, to some small-scale, inexpensive pig farms, buy three-yuan piglets for fattening, and try not to purchase piglets in batches in the bazaars to prevent infections of various infectious diseases and economic losses.