According to you the chinese are the smartest people in the world. Why wouldn't you want to go study there? They obviously have the best schools, if they are the smartest people on earth.
Because learning in a foreign language, along with trying to make your way in a foreign culture, are a major handicaps. Assuming your ancestors are English, why wouldn't you want to go to school in England, where the language is the same, the culture isn't too different, and you don't have to deal with an infestation of yellow mud people?
Smart and wisdom are not the same.
Communism has done a lot of damage.
For “smart” people to be productive and innovative, they have to have freedom. Allowed to challenge how things have always been done without being crushed for it. Being rewarded based on results not seniority. Asian cultures have been very unfriendly on that front.