Joker exchanges are done by first announcing a Joker exchange is to be made and then by handing the tile to the receiving player.
Etiquette and Sportsmanship (Article ID 115)
Etiquette and Sportsmanship while playing mah jongg
Joker exchanges are done by first announcing a Joker exchange is to be made and then by handing the tile to the receiving player.
Etiquette and Sportsmanship while playing mah jongg