1 workmanship, fine workmanship is the real thing, especially at the joint between the sole and the upper. Usually, the real thing is very fine, and nothing is too big.

2 trademarks, the trademarks of the real goods are clearly printed, and the trademark styles of some fakes are different from those of the real goods.

3 smell, the glue used to paste the real thing is environmentally friendly, but the fake one is different, and it smells terrible.