Directed by Sammo Hung 
Produced by Raymond Chow 
Written by Louis Lau
Huang Chik Chin 
Starring Yuen Biao
Sammo 
Hung
Bryan Leung Kar Yan 
Music by Chen Hsun Chi 
Cinematography Ricky 
Lau 
Editing by Peter Cheung 
Distributed by Golden Harvest 
Release 
date(s) 1979 
Country  Hong Kong 
Language Cantonese 
Knockabout (杂家小子; Za jia xiao zi) is a 1979 Hong Kong action film directed by Sammo Hung and starring Yuen Biao.
Plot
The film follows two con artist brothers, Yipao (Yuen 
Biao) and Taipao (Bryan Leung Kar Yan). One day they are cheated out of their 
ill-gotten gains in an encounter with Jia Wu Dao (Lau Kar Wing). They try to 
fight him, to retrieve their money, but are defeated, so they ask him to train 
them, hoping to become the best fighters in the city. After surpassing the 
fighting skills of "ordinary people", Yipao soon discovers that Jia Wu Dao is a 
murderer. When he realises his secret has been revealed, Jia Wu Dao attempts to 
kill Yipao, but Taipao blocks the fatal blow and is killed in his place. Yipao 
escapes and plots how he will avenge his brother's death. He encounters a fat 
beggar (Sammo Hung) and, impressed by his kung fu, he asks takes the beggar to 
become his new kung fu master. After extensive training, the beggar asks Yipao 
to go and get him some wine. As he is about to return with the wine, Yipao 
encounters Jia Wu Dao again, and they fight, but Yipao's skill is insufficient. 
The fat beggar and Yipao then team up, using the monkey style kung fu, against 
Jia Wu Dao's snake style. As their fight moves outside of the wine shop, the fat 
beggar and Yipao defeat Jia Wu Dao, killing him with spiked vines, finally 
avenging Taipao's death. The fat beggar reveals that he is an undercover 
detective trying to arrest criminals, particularly Jia Wu Dao.
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