It's not that rockets only accept people from China, but it comes down to the following reasons.

1. Yao Ming came to the rocket by accident.

2. There are many Chinese in Houston where the rocket is located, and the Chinese market base is huge, which is conducive to the sales of tickets.

3. Yao Ming has successful experience, and Jeremy Lin's arrival can rely on the China accumulated by Yao Ming to help the rocket market benefit.

Rockets, the boss of every NBA team is not an idiot. Alexander just used the influence and skin of Jeremy Lin and Yao Ming to make money for his team. Of course, it is not clear whether the boss of Knicks Duran is an idiot.