Why did Bruce Lee's 'Jing Wu Men' have a European face at the end?

This question involved some of the plots and character settings in Bruce Lee's movie, Jing Wu Men. In the movie, the director, Zhang Zhicheng, was a martial artist from Europe. The facial features that appeared in the scenes were made using a special technique that allowed the actors 'faces to be fine-tuned to present the facial features of Europeans. This technique is known as "facial microsurgery" or "facial bone shaving". It can change the proportion and shape of the face by adjusting the bones and muscles of the face to make it different from the traditional Asian face. Zhang Zhicheng's facial micro-sculpting was probably to create a European body and temperament that matched the worldview and character settings in the movie. It should be noted that this fine-tuning technique did not only appear in Bruce Lee's films, but also in other films and television works.