The phrase "keeping in good health and being practical" in Sun Tzu's Art of War has always been discussed from the perspective of the art of war, and no one regards it as the wisdom of keeping in good health. It is precisely because people ignore the connotation of keeping in good health that when talking about the earliest source of the word "keeping in good health", it is often either Zhuangzi or Guan Zi. However, compared with many pre-Qin documents that used the word "keeping in good health" earlier, such as Sun Tzu's Art of War, Guoyu and Four Classics of Huangdi, the word "keeping in good health" is either ignored or avoided. The phrase "keeping in good health is practical" in Sun Tzu's Art of War clarifies the meaning of keeping in good health, hoping to arouse people's attention to the wisdom of keeping in good health in Sun Tzu's Art of War and correct people's misunderstanding of keeping in good health.

"Sun Tzu's Art of War March" said: "Where the army is high in evil, Guiyang is low in yin, healthy and practical, and the army is disease-free, it is called victory."

Let's take a look at Mr. Huang Pumin's translation: "In general, the garrison always likes dry highlands and hates wet depressions; Pay attention to sunny places, despise wet places, be close to aquatic plants, have sufficient military supplies, and soldiers will not get sick, so as to ensure victory over the enemy. "