Breeding system of breeding pigs: boar station, Yima "reserve-breeding-seed conservation-breeding" system, Yichuan "reserve-breeding-seed conservation" system;
◆ Commercial pig breeding system: Linzhou parents' surrogate sow farm, large-scale commercial pig demonstration farm and farmers' breeding community (Luoyang, Sanmenxia and Linzhou);
◆ Scientific research system: establish a pig engineering research center, build a bio-physical and chemical experimental base, and establish a test site in cooperation with the French pig research institute.