There is an underlying story about a lazy son who knows some kung fu but mostly fakes it to show off. After being exposed he does good by improving his skills to the point where he can finally knock down his kung fu master father.
1972
2004
2003
1995
1998
2005
1988
1990
1996
1997
2023
1994
2008
1977
2019
2013
2009