"Health Preservation Encyclopedia 000 Questions" takes health preservation as the theme and is divided into two chapters: health preservation classics and health preservation practice. The classic chapter mainly introduces the concepts and propositions of health preservation in the Huangdi Neijing, the Book of Changes, and the Compendium of Materia Medica. The practical chapter mainly introduces traditional Chinese health care techniques in terms of medicinal supplements, dietary therapy, hand diagnosis, facial diagnosis, meridian points, acupuncture, cupping, massage, etc. According to "Health Preservation Encyclopedia 000 Questions", everyone can harmonize the yin and yang of their body, pay attention to their diet, housing and transportation, and understand their health status, so as to achieve the goal of long and healthy life without diseases.