What are the TCM systems?

To investigate the provisions of the Chinese Medicine Law on the protection, development and inheritance of Chinese medicine. The Law of Chinese Medicine aims at inheriting and promoting Chinese medicine, ensuring and promoting the development of Chinese medicine and protecting people's health. It follows the development law of traditional Chinese medicine, adheres to the combination of inheritance and innovation, maintains and exerts the characteristics and advantages of traditional Chinese medicine, uses modern science and technology to promote the development of theory and practice of traditional Chinese medicine, and defines the important position, development policy and supporting measures of traditional Chinese medicine from the legal level, thus providing legal protection for the development of traditional Chinese medicine. So the answer is ABCD.