If you only need an injection for health care, then one or two months of training is enough. Although the acupoints and needling methods are complicated, they are easy to master as long as you study hard, and they are nothing more than fast, accurate and practical (of course, fast, accurate and practical are only for people in the practice stage, because at least you should dare to stick the needle in. Really experienced old Chinese medicine practitioners have gentle acupuncture methods and need long-term practice.