1, routing: True AJ four-color mandarin ducks are exquisitely routed, and the surface is shiny and bright under illumination; The roughness of the imitation can be seen at a glance.

2. Fei Biao: The Fei Biao area of true AJ four-color mandarin ducks is larger, and the splicing of getting off is more exquisite; The Fei Biao size of the imitation and the stitching below are not really exquisite.