I have to say overall that I really did quite like this film despite the massive porky it tells in pretending to represent the life of the most celebrated Wing Chun teacher of all time, Ip Man (notable due to both his international popularization of Wing Chun and fact he was the teacher of Bruce Lee.).
In fact, this story bears zero resemblance to the actual life of Ip Man, but instead comes out as another anti-Japanese propaganda film espousing Chinese superiority as evidenced by kung fu (curiously, since one would think ideas of nationalistic superiority are at the root of these things happening) during the occupation of China during the second Sino-Japanese war (which, undeniably was about Japanese imperial ambitions and perceived cultural superiority and featured atrocities such as the Massacre of Nanking.).
Setting aside though, I did love the way Ip Man was played and the kung fu in the actual film was fantastic. Fast, impressive and well choreographed. Great to watch.
So, well worth your time as long as you realize the entire story is a complete fabrication.