It means don't eat all day and have nothing to do, don't waste a little time being lazy and not working hard, eating will hurt your health, and if you don't insist on doing one thing, you will accomplish nothing. Educate people not to eat all day, not to do nothing, and not to waste a little time giving up studying hard. This sentence comes from the famous alchemist, physician and Taoist Ge Hong in the Eastern Jin Dynasty, Volume III of Bao Puzi Waipian Xu Xue.

Bao Puzi's Inner Chapter mainly talks about fairy prescriptions, ghost changes, health preservation and longevity, and treatment of disasters and diseases, which belongs to the category of Taoist health preservation. Its contents can be summarized as follows: discussing the universe itself, demonstrating the existence of immortals, discussing the production methods and applications of Dan medicine and panacea, discussing the study and application of various formulas, discussing various bibliographies of Taoist scriptures, and explaining the universality of world practice.

Extended data:

Waipian discusses the gains and losses of current politics, criticizes secularism, describes the way of governing the people, and advocates benevolence and virtue, love for the people and abstinence. The Summary of Siku said it was "rich in rhetoric and profound in truth." Lu Xun praised him for "talking about the social state of the late Jin Dynasty".

Waipian also expounds the progressive view of literature, emphasizes the importance of ideological content and social function, and advocates that words will help to educate and pay equal attention to literature and morality. I believe that literature is developing, and today is better than ancient times. We should not only oppose respecting the past, but also the present. It is emphasized that literary criticism should pay attention to the author's style and personality, record and collect widely, and oppose extremes and dabbling.

In Bao Puzi, Ge Hong integrated metaphysics with Taoism, theology with Taoism, alchemy with alchemy, alchemy with spells, Confucianism with immortals, thus establishing a theoretical system of Taoist immortals.