Chuanchi mahjong machine, see if it is original. Look at these screws. According to relevant public information, there are no scratches on the screws, which are original Chuanchi mahjong machine and have not been replaced. Mahjong machine was born in Japan. Mahjong machine's working principle is that the cards with the back facing upwards are attracted by the magnetic ring on the shuffling barrel, sent to the conveying trough along with the rotation of the magnetic ring, pushed into the pier by the card folding motor of the head, and pushed away by the chain rod, while the cards with the non-magnetic front face continue to rotate on the tray (single-mouth machine principle), which has been upgraded to a four-mouth machine.