1.  I once read an article of Bai Yansong, a famous host of CCTV and also a criticizer of this opinion.

2.  He once wrote about a college student, who wanted to find a job when he was still a freshman.

3.  Once, I asked a friend who is a boy majored on arts whether the stereotype influenced their choices.

4.  My close friends from Nanjing once told me that in most of their eyes, Subei students are a group of studying machines, genius in maths, physics and chemistry, sitting behind a crowed of books.

5.  I once accommodated with nine roommates in middle school and seven in high school, but I never tried eleven roommates.

6.  They were focused to do endless homework, attend class seven days a week, do home once a month.

7.  Some of them sat round me, shouting questions at me at once.

8.  We once had very much work when I was a freshman.

9.  I once met a girl in classroom.

10.  Since I once travelled there and have a little knowledge about their unique lifestyle, I talk with her a lot about chafing dish.