This is kind of unrelated, but there's a fun fact about the first film that flies under a lot of people's radar: in the scene where the titular character confronts his friend who's working as a translator for the occupying Japanese army, calling him a traitor for working with them while his friend protests about needing to feed and protect his family, the scene ends with his friend yelling at Ip Man (who is walking away in disgust), "I'm a Chinese man!"
What the subtitles don't catch is that he yells that sentence (and only that sentence) in Japanese, the language of their occupiers. It subtly changes the context of the scene, but since the subtitles don't indicate it, there's no way to know that unless you happen to speak either Cantonese or Japanese.