I don't know... Science does not discard what cannot be explained. a lot of western medicine is also based on empirical knowledge that was understood only later

I don't know... Science does not discard what cannot be explained. a lot of western medicine is also based on empirical knowledge that was understood only later. I have read that some points of acupuncture have been shown to have the effect they claim, and how it works can be explained. Some other points have been shown to have no measurable effect. And some point have been shown to have effects, but cannot be explained.