The Chinese are accredited with the invention of dozens of things that we still use in our day to day lives now, including alcohol, football (soccer), the compass, silk, tea cultivation, the kite, gunpowder, printing, paper money and so on. They also discovered acupuncture.
In East Asia, acupuncture isn't practiced just in China, but also in other East Asian countries such as Japan, Korea, Vietnam, etc. Each country has their own style of acupuncture based on their culture and it's historical development.
Acupuncture is the ancient healing art of inserting very fine needles into specific points along pathways on the body to activate the Qi (energy). The flow of Qi can be disrupted in many ways, i.e. emotions, poor diet, overwork, trauma, stress, etc. Acupuncture acts to restore the natural flow of Qi bringing holistic balance back to the body.
Over the last 20 years, acupuncture has gained great popularity in Europe and other westernised countries. It's rapid growth has lead to doctors, chiropractors, oesteopaths and physiotherapists putting needles in people. They call it 'dry needling', which isn't acupuncture. Those that don't call it dry needling and instead call it acupuncture have generally done just a weekend course in learning acupuncture, which isn't enough, but as there is no regulation they can get away with it.
In China today, acupuncture, Chinese herbal medicine and western biomedicine is unified, allowing a patient to receive the best of both medicines for quick relief of their health complaints. It will be many years before Chinese and biomedicine is unified in westernised countries. Until then, it's left up to people to search for alternatives to current medicine that can treat their health problems better and with less side effects.