How do two national men's basketball teams choose players?

The men's basketball team is divided into two teams, and the coaches of the two teams draw lots to decide. The national team coached by Li Nan is called "Red Team" and the national team coached by Du Feng is called "Blue Team". The big list is determined by the Basketball Association, with the red team 2 1 and the blue team 23. The principle of the two teams is not to move, but this is an open list. If there are better players in the league next year, it will be a dynamic adjustment. In other words, if there are better players next season, Li Nan and Du Feng can add them to the national team. If Li Nan and Du Feng are interested in a new player, they need to draw lots to decide which national team the player will go to.