The difference between Changsha mahjong tiles and unlicensed tiles.

Information transparency, policy changes and other differences.

1, information transparency: under the rule of touching cards, the touched card must be turned over in your hand so that other players can see the touched card. This means that other players can know which cards they have touched, and thus infer the hand situation and card type. This increases the opponent's information and game strategy, so players should choose the strategy of playing cards and cards more carefully.

2. Strategy change: Under the rule of not touching cards, the touched card can be hidden in the hand, and other players can't see this touched card. This means that other players can't know which cards they touched, thus reducing the opponent's information. This will lead players to choose the strategy of playing cards and cards more freely, because other players can't accurately guess the hand situation.