3. It can be analyzed from three major leagues (NBA/ World Championships/Olympic Games). 3. Examples (Dream Team, European Team, South American Team); The height and technical characteristics of the five positions on the court, as well as the changes in the core and tactics of the team. 4. Personal opinion: the concept of position is vague and the players have strong comprehensive ability. (Pat Riley once predicted that the average height of the five positions in the future NBA will be 2-2. 1 m, all of which have the ability to throw, pass and grab. ) 5. You can also talk about China basketball (short pass, fast break, flexibility-three strikers-.