1.  Even before real contact with someone else, stereotypes might have grown from some invisible campus-standards.

2.  We were from a small city while they were born in capital city; we studied in a school where seldom had people been admitted to Peking University or Tsinghua University while they would enter the most prestigious universities in the future; we had only learned English for a few years while they had come to contact with English since born.

3.  We were from a small city, but they were from a capital city; we studied in a school where seldom had people been admitted to Peking University or Tsinghua University, but they would enter the most prestigious universities in the future; we had only learned English for a few years, but they had come to contact with English since born.

4.  But the more people I contact , the more invalid I find this method is.

5.  After long-term contact, I found Jack was a warm-heart person but was a little shy.

6.  But the more people I contact , the more invalid I find this method is.

7.  After long-term contact, I found Jack was a warm-heart person but was a little shy.

8.  But the more people I contact , the more invalid I find this method is.

9.  After long-term contact, I found Jack was a warm-heart person but was a little shy.

10.  But the more people I contact , the more invalid I find this method is.