71.  She nodded, telling me that I didn't enter a wrong classroom.

72.  Then she set aside her book, turned her face to me, which I consider a friendly sign to allow me to ask questions.

73.  She smiled at me and nodded again, like I hadn't interrupted her, then turned back to her book.

74.  Her impressive performance on class made me sure that she majored in history.

75.  It was incredible for me that a student with such vast knowledge on history should come from the Institute of Software, which required excellent performance in science.

76.  Also, I couldn't believe that a student majoring in science could know more about history than me, a student leaning liberal arts.

77.  I realized it was stereotyping that made me make mistakes.

78.  As a student like anyone around me, I was compared all the time with the child in the neighbourhood, the cousins, top students, and a group of monsters.

79.  For me, it was difficult for me to imagine how people can survive in such an environment.

80.  Students like me were not friendly to those in northern Jiangsu.