Acupuncture is Chinese traditional healing practice. It should only be done after being diagnosed by a TCM (Traditional Chinese Medicine) practitioner. It can help in many conditions and does work.
There's also a variant called acupressure where you use pressure for on the acupoints, so no needles are needed. Although might be not as good, it can still help and has the benefit that you can apply it on yourself without much knowledge.
You can see the below acupressure instructions for getting rid of stuffed nose for an example:
Get rid of stuffy or running nose without drugs
Also see:
Acupressure points guide
And you're not nuts. A billion Chinese can't be wrong
