What does the master in Liu Gongquan mean?

This is a story about the traditional virtues of China. The story tells that Liu Gongquan, a calligrapher in the Tang Dynasty, wrote a good hand when he was a teenager, but an old man told him that someone could write better with his feet, and Liu Gongquan was dissatisfied. After seeing it with his own eyes, he was finally able to ask for advice modestly and understood the truth that he could not be complacent.

Liu Gongquan (AD 778-865) was born in Yao County, Shaanxi Province. He inherited the calligraphy structure of his predecessors and created the so-called "six-body", which was a model for later generations until he entered the printing age. His calligraphy is full of divinity, spreading among the people and even abroad. He was always valued in Tang Muzong, Jing Zong and Wenzong.

He lived in the official residence, served books, grew up in the Forbidden City and had a successful career. Emperor Wenzong called him "Zhong Wang resurrected, but it is hard to see with a pen." Mu Zongdi asked him how to use a pen best, and he said, "With a pen in your heart, your heart is right." This famous saying was passed down as a "pen" story by later generations. "Liu Ti" is as famous as "Yan Ti", also known as "Yan Liu Jin Gu".

Liu Gongquan, a calligrapher in Tang Dynasty who Liu Gongquan didn't know, is as famous as Yan Zhenqing and is known as "Yan Gu". The so-called "bone" refers to its charming, generous and open style of word structure. His mysterious pagoda and diamond sutra are well known from ancient times to modern times. When Liu Gongquan was a child, his handwriting was not good.

One day, an old man selling tofu flowers passed by and saw Liu Gongquan writing. Liu Gongquan asked, "Is my handwriting good?" The old man said, "Your handwriting is like my tofu flower. It has no bones and is soft and crumbly." Liu Gongquan was very unhappy and said, "Then write." The old man said, "I can't write, but my friend paints and writes soup with his feet better than you." .