I'm sorry you had to experience that. I hope you did get to experience some of the beauty of our country too. People are quick to bash China but there are some things they are doing well. I feel that Asian exchange students need to be warned about the danger of night time in Western cities.
I know the relations are strained between our countries but I hope they improve. Our government has "do not travel" recommendations in place for China due to the current political issues between our nations but I would love to visit one day.