My take on it:
I have two teachers, my Taiji teacher is caucasian and fluent in Mandarin. My
Choy Lay Fut Kung Fu teacher is Chinese. I have also had a caucasian Hung Gar/CLF teacher who knew very little Chinese language, but knew a lot about the culture. .
All of my teachers are/have been great. However, I would argue that knowing the Chinese language is going to help you immensely and prevent a lot of confusion that is caused by translation. If you are serious about being a “Sifu” and not just a student you must take the time to learn the language and culture.
When you learn the Chinese language it is goes hand in hand that you also learn Chinese culture, philosophy and traditions. The literal translation of Chinese is unintelligible unless you have a basic understanding of these things…they are that ingrained.
Furthermore, when you understand the language and the cultural context, you can get a deeper understanding of what a technique is all about.
An example, in Taiji they talk about the “mind” or “yi.” And they talk about the “yi” leading the “chi.” Well did you know that the Chinese consider the the “mind” or “yi” to reside in the area of the heart? They’re not talking about the brain at all! So practitioners that did not make this distinction would think that they are supposed to be leading the chi around with their brain. When in fact it is the area near the heart that is the “governor” of chi.
You see how things get easily get lost or misconstrued in translation.
Learning the language and culture will deepen your understanding but it is no substitute for sweat.
So you also see Chinese dudes that know everything to know about a particular art, could talk for days about theory and take pride in the fact that they are a Chinese guy, teaching a Chinese art, using Chinese terms and principles of Chinese philosophy.
And at the end of the day they can’t fight they’re way out of a wet paper bag and have to rely on bull**** like Lin Kong Jing (empty force) and bull**** parlor tricks.
Compare that to a white guy that worked hard with Sifu and can APPLY what he knows and can’t speak a lick of Chinese.
So my point is that understanding Chinese language and culture can be an invaluable part of your deepening your understanding. But it is no substitute for hard work and effort.
I would approach every teacher skeptically and as an individual. Take some time to evaluate their skill and teaching ability and understanding of their art. It’s not gonna benefit you to prejudge them based on the color of their skin or their native language and culture.
The best teacher, of course, is going to be the one with fighting skills and that can deepen your understanding on many levels, including cultural.
Peace. 