Martial arts master and director Yuen Wo Ping choreographs the action.
https://www.youtube.com/watch?v=TkOUbK4s8TUVideo can't be loaded because JavaScript is disabled: Ip Man 4 – The Making of (https://www.youtube.com/watch?v=TkOUbK4s8TU)
It's remarkable that the series managed to have three sequels with the same star, producers and directors over 11 years[...]