It means folding ears and standing ears. Scottish fold ears cannot be matched with folded ears, otherwise a higher proportion of disability will occur. Generally, they are mated with British Shorthair and American Shorthair, and the resulting folded-eared cats are called Scottish Folds, and the prick-eared cats are called Su Folds and Prick-eared cats. Su Zhe's prick ears and prick ears carry the fold ear gene, and mating with prick ears can also give birth to fold ears.