How to explain the name "Mo Hanxuan"

Calligraphy: meaning is the same as pen and ink, originally referring to words. Three Kingdoms Cao Wei Pi's Essays on Canon: "The author is ancient, in calligraphy, and feels the article." Later generations also refer to calligraphy and Chinese painting.

Mo Hanxuan mentioned by the landlord actually refers to calligraphy or Chinese painting, which is undoubtedly a gallery.

There's really nothing to explain. If you really want to give a lecture, you can start with the meaning of calligraphy and then extend it to painting and calligraphy. You can talk about the evolution of this word.