It is said that the Chinese have preserved more of the Primitive Revelation (the storehouse of knowledge possessed by Adam) than any other people on earth.
What other cultures speak about dragons? They did exist. The Chinese have been around for a very long time as a continuous culture.
What about Martial Arts? These are similarly mysterious. I've seen things that it's hard to explain with a purely materialistic explanation. Striking a stack of bricks from the top and choosing which one will explode? It doesn't exactly sound as primitive as "I hit it, it breaks" nor is it necessarily the work of demonic power. Or touching someone in a certain spot and temporarily paralyzing them, or making them weak. There might be some kind of nerve or energy point that is being manipulated.
Notice that you can't tickle yourself? Why is that? Maybe because your own energy short-circuits, or completes the circuit in some way? Or why does it feel better when you touch a spot on your body that hurts?
Just with a bit of thought, I can see the basis for Acupuncture.
Just because something is mysterious doesn't mean it's "the devil". That is the classic reaction of any primitive people to a medicine or technology they don't understand. Just watch any sci-fi film!
Mystery doesn't equal demonic. That's what the enemies of our religion say about Catholics in the Middle Ages -- that the Church was against science or scientific truth.
When it comes down to it, we Westerners who grew up with Western medicine find ANY alternative therapy to be "hokey". But that doesn't make it so.
The United States has one of the worst Infant Mortality rates in the world! And something like 40% of full-term pregnancies result in C-Section -- the worst rate in the world. Think about it: western doctors (obstetricians) would have you believe that the whole system of giving birth just "doesn't work". Something with a 40% failure rate doesn't work! Well I'll tell you what doesn't work: modern (western) medicine.
So we obviously have something to learn from "the dissenting opinion".
As for acupuncture, I haven't used it myself, but I'd have to say I trust it more than Big Pharma any day.
Also, you're exaggerating Our Lord's saying about trees and fruit.
If that is to be taken in the literal sense in every case, then the Chinese wouldn't be able to produce a good tablet, phone or anything else. They're an evil (Communist) tree, right? And a good tablet is something "good". So obviously you're applying that saying too broadly.
For that matter, an evil man (virulent anti-Catholic atheist) could do many good things, and could produce many good things -- machines, software, foods, medicines, he could perform life-saving operations, etc. -- all considered "good fruit". Maybe he can still produce good fruit in the material realm? But, again, it would seem that Our Lord's saying can't be applied so broadly.