The jersey number is the code number of the player on the court. In order to make it easier for the referee to use hand gestures to represent the player's data, it is not related to the strength of the player. The jersey number is selected by the player himself. Everyone can choose the number according to his preference. The jersey number in a team cannot be duplicated, and the number must be between 0-99.
The basketball rules stipulate that the advertisements allowed on the basketball vest must not interfere with the visibility of numbers before and after, and the size of the number on the vest must not be reduced in any way. These rules are entirely for the basketball referee to clearly see the player’s corresponding number, and thus can Make a corresponding basketball player number gesture to make a penalty.