I can only briefly talk about the problems you have to face here, mainly because I don't like typing very much.
First, a few people specialize in aviation flight after going abroad, and then take it as a career after graduation. I suggest you study aviation management, then get an aviation license, and then engage in a pilot career after graduation, so that you have more room for improvement.
Second, the problem of vision is not a problem at all. Now technology is very developed, and many technical departments in Europe know that surgery can quickly restore your vision. Your eyesight has nothing to do with flying a plane. You're not flying a fighter. And American bombers with glasses!
Third. You have heard of several people who go out to learn flying privately and are willing to return to China after graduation! Those who return to China immediately after graduation have basically signed contracts before, and generally have to fly 1800 hours to return to China, which is very high in gold content. Are you clear?
Don't talk, type, you also give less, lack of sincerity, bye-bye, may God bless you!