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.
1941
1998
2010
1952
1950
1951
1977
1955
2007
1980
2001
2008
1966
2006
1948
1917
1918
