An injury ended Zhang Zhiqiangs dream of becoming a professional basketball player, so he became a physical education teacher. To impress the new young math teacher, he volunteers to teach the problem class of the school in math.
1964
1972
2001
1976
1961
1990
1979
2007
1957
2002
1995
1989
1968
1984
1960
2003
1983
