Why is Zhong Rong the first poetic theorist in the history of literary criticism who explicitly put forward the theory of "taste"?

Zhong Rong is the first poet critic in the history of literary criticism who explicitly put forward "commenting on poetry by taste". He said: five words are the key to writing, and they also have flavor. Here, Zhong Rong believes that the five-character poem has a "taste" precisely because it "refers to things and forms, and feels poor and meticulous when writing things". The finer the poem, the more delicious it is, criticizing the metaphysical poem for "emphasizing its words and ignoring its taste". Zhong Rong believes that Fu, Bi and Xing should also be used correctly.