Yu, a native of Yuyao, Zhejiang, is a famous aesthetician and writer in Chinese mainland. He was awarded the title of "National Outstanding Contribution Expert" and served as a professor in several universities. In fact, it is difficult to talk about Yu's position in China's cultural circle. This China aesthetician, who is famous for "Cultural Journey" and "Notes on Mountain Residence", is praised by critics as writing prose with his left hand, which is not superficial, and it is not difficult to understand that writing artistic theory with his right hand.

Take his "cultural journey" as an example. Among them, there is only 2,500 words of "Hidden Springs in the Sand Garden", which is purely a lyric prose of mountains and rivers, but picturesque. The main content of this article is the process and feelings of the author climbing the sand mountain alone in the desert land of Dunhuang County, and then enjoying a bay of clear water down the mountain. In the article, Yu described the beauty of the sand mountain like this: "Light and shadow are separated by the straightest lines, and gold and indigo are pure and mottled, as if they had been screened by a huge sieve. The wind of day and night shapes the ridges and slopes into waves, which are extremely gentle waves without any ripple ... "In the works of aestheticians and writers," light ","shadow "and" line "are no longer purely theoretical and lifeless words, but words that can be felt in the author's heart.

As for Yu's works of artistic theory, they are also highly valued and respected by academic circles. For example, in 1983, he published "Historical Draft of Drama Theory", which is Chinese mainland's first historical work comprehensively expounding the cultural development and drama thoughts of all countries in the world from ancient times to the present. In the second year after publication, he won the first national prize for works on drama theory in Beijing, and the first national prize for excellent teaching materials in Beijing Ministry of Culture ten years later, while another book published the first prize for works on drama aesthetics in Chinese mainland on 1985. 10 years later, he won the first prize of the National Excellent Textbook of Beijing Ministry of Culture, and another book published Chinese mainland's first drama aesthetic work "Drama Aesthetic Psychology" on 1985, and won the Shanghai Philosophy and Social Science Works Award the following year. His knowledge can be glimpsed.