How many balls are there in billiards?

Nowadays, many people like to play billiards, which can also be called a very popular sport in the world, which has aroused great concern, but some people don't know how many balls billiards have. Usually play Chinese eight-ball. There are 16 balls, and the numbers on the balls are 1 to 15 respectively, where 1 to 7 is a monochromatic ball, then 8 is the winning ball, and then 9 to 15 is the two-color ball. In addition, you can see a white ball that can be used to hit other balls. During the game, two players can choose two-color balls and monochrome balls according to their own preferences, and then put the balls they choose into the bag in the above order, and don't hit them. After all the bags are put in, you can hit the winning ball on the 8 th, and hitting the bag represents the victory of the game.