Only with this "heart of nymphs" can we discover the "hierarchy" of the aesthetic value of mountains and rivers. Otherwise, although "good words are well-intentioned, they are invisible and unexpected." For this kind of aesthetic mind, Guo explained that it is not "weariness" or "stagnation", but "melancholy" and "broad-minded and appropriate", that is to say, it is neither a distressed and depressed selfish mind nor a narrow and lifeless mind, but "broad-minded and appropriate". With this kind of mind, it creates an aesthetic image, that is, "the situation of people's irony, the tip of things leaning sideways, naturally laying out in their hearts and unconsciously writing it out."