a lot of Chinese or Asians are having a great time here; either PhD with quite high salary(compare to chinese or other countries) or students with scholarships. About racial discrimination, well, being attacked by some evil people is definitely not "racial discrimination", you can be attacked in China as well; most well-educated people don't have any discrimination. They are just a little reserved, or a bit conservative in their own life style; try to be generous, a nice person is welcomed everywhere.