It refers to all the same components or all the same appearance, and refers to a deck of tiles composed of one suit in a certain family when playing mahjong tiles.

Qingyise is a Chinese word, the pinyin is qīng yī sè, from the 29th chapter of Li Baojia's "The Appearance of Officialdom" in the Qing Dynasty: "And he [She Xiaoguan] gambles very high, and the more he loses, the more he loses. The more he is, the look on his face remains unchanged. He also likes to be "all in one color", so his fellow gamblers regard him as the God of Wealth.

It can also describe several identical things. For example, "The streets are all filled with cars."

Extended information:

Mahjong, originated in China, is a gambling game invented by the Chinese Han people, an entertainment tool, and generally used Small rectangular blocks made of bone, bamboo or plastic, with patterns or words engraved on them, 136 in each set.

In ancient times, mahjong was mostly made of bone-faced bamboo backs. It can be said that mahjong tiles are actually a combination of playing cards and dominoes. Compared with other forms of dominoes, Mahjong is the most complex and interesting to play. Its basic playing method is simple and easy to use, but there are many changes and the combinations vary from person to person. Therefore, it has become one of the most attractive dominoes in Chinese history. One of the forms of gambling.