"Hygiene" is a verb-object phrase in terms of composition. Life is a noun, that is, life or body; "Wei" is a verb, that is, "defend". The compound words of "Wei" and "Sheng" originally mean "maintaining life" or "protecting the body". When "hygiene" is used as a noun, its meaning is changed to "the act of saving life or protecting the body" or "all measures taken to save life or protect the body", including all measures taken to prevent and treat diseases and maintain and improve health. In modern Chinese, "health" is also used as an adjective, meaning "clean" and "clean", which is one of the measures to keep healthy.

The academic research on "health" has made great achievements, but the fly in the ointment is that most of them regard it as a new term in modern times, focusing on the emergence of the modern term "health" and the process of its introduction into China, without a comprehensive investigation of the significance of "health" in the traditional society of China.

In fact, "hygiene" in traditional culture is the basis of modern and even modern concept of "hygiene". The author thinks that in the traditional cultural context of China, "health preservation" has four meanings: health preservation, medicine (medical treatment), health preservation and saving the world.