literature that shows humanity and nature without pursuing social utility is pure literature. For example, A Dream of Red Mansions (Cao Xueqin), Metamorphosis (Kafka), Middle-aged Man (Chen Rong), Birds (Tagore) and so on.
Lies literature pursues fame and fortune, but in the end it loses fame and fortune forever, and even itself is lost in the long river of history. Pure literature does not pursue fame and fortune, but it has gained immortal fame and fortune, and it can also occupy a place in the cultural history of mankind forever.