Why did Jiao Mo sell calligraphy on the spot for the sake of calligraphy?

In order to increase income or raise awareness.

Calligraphers' calligraphy art is the same as other arts. If a calligrapher goes out to sell calligraphy, I think he makes money by his own art.

Jiao Mowei, Zishugao, 1955, from Yangcheng, Shanxi. Member of China Calligraphers Association, national first-class calligrapher, national first-class calligrapher, and member of China Huaxia Wanlixing Calligraphy Association.