A call stops the tile just discarded. In American play you expose the finished group. There is no chow, so you call only for identical tiles or a win. A call interrupts the player who was about to draw.
Call
叫牌
叫牌
A call stops the tile just discarded. In American play you expose the finished group. There is no chow, so you call only for identical tiles or a win. A call interrupts the player who was about to draw.