Hi Duanshizhao, I am an Asian. I think I am sharing your feelings when you are having trouble with life and staying away from your family....that makes you feel more worse .... I was in grad school when I got the news that I was an cancer patient. Luckily It was a first stage of cancer so I only had surgery.... I know .... Life is unfair as always. Message me or we can be friend on Facebook if you need a friend to talk.