Articles 5 and 6 of SCM agreement stipulate the rules for serious prejudice of subsi-dies, including the rules of presumption of serious prejudice and the rules of determination of seriousprejudice and the rule of exception of serious prejudice. In WTO practice, due to the lack of a defi-nition of “serious prejudice”, WTO panels and the appellate body has developed jurisprudence onthe substantive rules of serious prejudice, by analyzing key terms such as “the effect of the subsi-dy”, “relevant market”, “displaces”, “impedes”, “ price...