Basic mahjong tile types: M*AAA N*ABC DD (AAA is the three letterings, ABC is the straight, DD is the trump card) Mahjong total ***14 tiles, m and n coefficients, AAA It represents the same three, and ABC represents three consecutive ones.

DD means two identical ones. So the way to draw cards is to add DD when m=0, n=4, or add DD when m=1, n=3, or add DD when m=2, n=2, or When m=3, n=1 plus DD.

Mahjong, a four-person domino game, is popular in Chinese cultural circles. Originating in China, it is commonly known as sparrow in Guangdong, Hong Kong, Macao and southern Fujian. It is a gambling game and entertainment tool invented by ancient Chinese. It is usually a small rectangular box made of bamboo, bone or plastic, with patterns or words engraved on it.

There are 136 cards in each deck of Northern Mahjong. Southern Mahjong generally has 144 tiles, with eight flower tiles of spring, summer, autumn, winter, plum, bamboo, orchid and chrysanthemum added. There are also mahjong played in some places, plus 1 tile each for Cornucopia, God of Wealth, Mouse, Cat, and 4 Wild tiles, for a total of 152 tiles.