What does the "old pen" in the post on the upper terrace mean?

The mountains are high and the water is long (the mountains are high and the water is long, which means praising Sima Cheng's painting art and morality). There are various wonders on the King of Wu. If there is no sophisticated technology, how can we describe this fresh and healthy scene?

The stippling of "Shangjietie" is like walking in a cloud, full of broadmindedness. Calligraphy works are the reflection of psychological rhythm and personality. Every ink dot and every line in Shangjietie naturally permeates Li Bai's personality, showing Li Bai's modesty and natural openness after the despair of officialdom. As the book in the work says, "Unless you have an old pen, you can be poor", and its temperament is vividly displayed.

Introduction of Li Bai

Li Bai was deeply influenced by Huang Lao's idea of sorting out villages. Li Taibai's poems have been handed down from generation to generation, and most of his poems were written when he was drunk. His representative works include Looking at Lushan Waterfall, it is hard to go, Difficult Road to Shu, Entering Wine, Fu Zhi, and First Making Baidicheng.

There are biographies of Li Bai's Ci and Fu in the Song Dynasty (such as Wen Ying's Xiang Ji). As far as its pioneering significance and artistic achievements are concerned, Li Bai's Ci Fu enjoys a high status.