Acupuncture is generally not advised as a primary form of healthcare, but as shown here, albeit exaggerated (it won't actually immediately stop bleeding like that, though it can help alleviate it somewhat), acupuncture can supplement actual medical practices, and is known to provide some pain relief and, in some forms, help with inflammation.
Note: Don't go to an acupuncturist to help you with bleeding, though, that shit won't actually work as depicted lmao