Look not for musk in dog's kennel. Dogs can't spit out the source of ivory.

1, the dog can't spit out ivory, and the dog can't find ivory, which means that the bad guys can't say good things. Once again, the bad guys can't say anything.

2, from the "Yuan Qu Xuan Hui Di" the first fold: "Father, these things, what good things, what axioms say, dogs can't spit ivory.