Why did the painter Zhu call Hong Moxuan?

"Red Zhu" is actually the name of Zhu painting and calligraphy studio. "Red Zhu" is actually the name of Zhu painting and calligraphy studio, not another name or stage name. The name of the studio represents Zhu's professional position and influence in calligraphy and painting. In the art world, many artists will give their studios a unique name to show their personal characteristics and styles in the field of artistic creation. Therefore, "Hongzhu" is the name of Zhu's studio, not Zhu's own title.