The word "Mingtang" has four meanings in ancient Chinese: one is the place where ancient emperors declared politics and religion, the other is the name of the stars, the third is the Feng Shui term, and the fourth is the "Mingtang Diagram" that marks the meridians and acupuncture points. The famous ancient "Mingtang Picture" was probably painted by Sun Simiao, the author of "A Thousand Gold Prescriptions", during the Zhenguan period of the Tang Dynasty, based on Zhen Quan's research, and the colorful "Mingtang Picture" was painted, but it has been lost for a long time. Chen Hui published a large-scale "Mingtang Picture" that organized disciplinary acupuncture points, such as the "Bronze Man Mingtang Picture" engraved by Zhenjiang Prefecture and the "Mingtang Meridian Picture" engraved by Qiu Jun (the above two are also lost). Two "Pictures of a Bronze Man in the Mingtang" carved by Zhao Wenbing, four pictures of "Pictures of a Bronze Man in the Mingtang" printed by Qian Jinghu in the 24th year of Jiaqing in the Qing Dynasty (1819), and four pieces of "Pictures of a Mingzhuang Fu Zheng, Fu and Side Man Mingtang" by the Chinese Medical Association and Shanghai University of Traditional Chinese Medicine The "Ming Dynasty Bronze Figure in the Hall" collected by the Medical History Museum (founded in 1938), etc. Generally, the 12 meridians in the "Ming Tang Diagram" are all printed in five colors, and the eight extraordinary meridians are colored green. There are 282 acupoints in the "Yangren Diagram", 194 acupoints in the "Furen Diagram", and 174 acupuncture points in the "Side Figure".