If you add the word "suo", it is the structure of this word, which is equivalent to a noun.

As long as "An" is taken out, it translates as health preservation. Verb (verb-object structure). The source is Zuo Qiuming's Ten Years of Zuo Zhuan and Zhuang Gong in the Spring and Autumn Period: "If you have enough food and clothing, you will dare to be a specialist and you will be divided."

Used as object and attribute; Refers to things for health.

Food and clothing, dare to be an expert, you must divide people into people.

To: preposition, used to: here means "improve"

Food and clothing:

Food and clothing,

Dare to design also:

Dare not enjoy it alone,

Must be divided into people:

Must be used to distribute (reward) to others (people next to them)