The whole sentence is: If you don't study for one day, you will be born in dust; if you don't study for two days, your speech will be boring; if you don't study for three days, your appearance will be disgusting.

Meaning: If a person does not study, he will become very vulgar in one day. When he looks in the mirror two days later, he will feel that his face has a terrible expression and is hideous. After three days, speaking to people will be meaningless and life will be boring. There is no life.

From "The Collected Works of Huang Tingjian". In addition, Su Shi also recorded this passage in his article "Remembering the Sayings of Huang Lu Zhi". Huang Lu Zhi said: If a scholar-bureaucrat does not study for three days, his moral principles will not be in his chest, his face will be disgusting to the mirror, and his words will be tasteless to others.

Extended information:

Huang Tingjian is good at running script and cursive script, and his regular script is also unique. Scholars particularly admire Wang Xizhi's "Lanting Preface". There is a poem praising Yang Ningshi, which illustrates his deep understanding of the practice of "Lanting Preface": "Everyone in the world has learned Lanting noodles, and they want to exchange for mortal bones without golden elixir. Who knows that Yang Fengzi of Luoyang went to Wusi Lan to write." This cannot be without his deep understanding of Wang Xizhi's calligraphy study.

When Huang Tingjian went back to the Jin and Tang Dynasties and studied the classic calligraphy of his predecessors, the one who had the greatest influence on him was Su Shi. It can be said that Huang Tingjian's handwritten short running script is largely based on Su Shi's. As one of the "Four Scholars of Su School", Huang Tingjian cannot be immune to the influence of Su Shi's calligraphy style. In Huang Tingjian's calligraphy theory, there are many comments on Dongpo's books, and most of them are highly praised. Su Dongpo was not only Huang Tingjian's teacher and supporter in literature, but also his role model in calligraphy.

The formation of Huang Tingjian's regular script calligraphy style can be attributed to the fact that Huang Tingjian saw the "Crane Inscription" on the cliff in Jingkou and continued to imitate it and develop his own style. Huang Tingjian’s teacher had a misunderstanding about "The Inscription of the Crane", that is, he regarded "The Inscription of the Crane" as written by Youjun, and he believed it deeply, so he devoted himself to studying it. However, it can be regarded as a mistake, which promoted the formation of Huang Tingjian's calligraphy style of spear and euphorbia, slow and slow, and vigorous.

From an objective point of view, Huang Tingjian and Su Dongpo are calligraphers in the history of Chinese calligraphy who transcended the calligraphy style of the Tang Dynasty 800 years earlier than the Qing Dynasty and went back to the pre-Tang Dynasty stele tablets or combined stele and inscriptions. As for the origin of Su Shi's calligraphy style, a clear answer can be obtained by comparing his representative work "Han Shi Shi Tie" with Luoyang's "Twenty Products of Longmen". Huang Tingjian clearly claimed to follow the example of "Qihe Ming".