What is a lettering in mahjong? Please make it clear. Thank you.

Carving refers to the combination of three identical cards, which is one of the basic terms of mahjong.

You can touch the cards yourself, or you can touch the cards when your opponent plays. The cards you touch need to be made clear to other players.

After the extended information touches two identical cards, other mahjong players play the same card and get it by "touching the cards", which is called "mingke".

There are two ways to produce lettering. One is to get all the cards by yourself, which is called "secret engraving"; The other is that after touching two identical cards, other mahjong players play the same card and then "touch the cards", which is called Ming engraving.

Mahjong originated from Guangdong, Hong Kong and Macao in China, commonly known as sparrow. It is a game and entertainment appliance invented by ancient people in China. Generally, it is a small rectangular box made of bamboo, bone or plastic with patterns or words engraved on it. Each mahjong deck in the north has 136 cards, and there are eight more cards in the south, namely, spring, summer, autumn and winter, plum, bamboo, orchid and chrysanthemum, totaling 144 cards.

Reference Baidu Encyclopedia lettering