If the number of people or objects in a sentence is greater than one, you can use the adverb 凡 , which means "all, "every" or "any".
凡 is used in written language.
凡 is placed at the beginning of a sentence, usually before a noun.
凡 isn’t always followed by a noun. In this case, the noun is preceded by the particle 的 .
Every experienced doctor knows this
fán chènzhí de yīshēng dōu zhīdao zhè yìdiǎn
Everyone who wants to help can contact this number
fán yuàn xiézhùzhě kě bō cǐ hàomǎ liánxì
All goods of improper quality will be returned
fán zhìliàng bù hégé de chǎnpǐn wǒmen dōu tuìhuí
If 凡 is followed by an action, it has the meaning "whatever".
Whatever you’re doing, you should think you can do it better than anyone else