Hk series Au revoir Shanghai

This is a nice series by TVB. The story is about A gangster head saves a men(Ni chun)(the main character). The man later helped the head of gangster to achieve success and become one of the most powerful man. The man (Ni Chun) later fall in love with the gangster's head stepsister and married. 17 years later, Ni chun want to retire and the boss want to keep him. At last ,the boss agreed. One day prior to leaving ,he did the last robbery for his boss (staeling antique from safety box) but got detected and he killed th bank officer because he thought the bank officer betrayed him.At the same day the wife died by accident.
After that he still kept his promise to the wife and become the shop owner of the 'Shiu Long Pau'.
The business become nearly bankrupt because he don't know how to make Pau. The bank officer 's wife appeared and came to shanghai to search his husband and found his husband dead.
incidentally Ni Chun found out he mistaken killing the bank officer.
When he investigated further, he found out his old boss actually is the main planner to kill his wife.Thing getting complicated when old boss wanted to kill him . At last..... I won't tell you the ending you should watch it.
Rating 7.5/10