What does it mean to write a sentence next to a calligraphy work?

I speculate that if "meaning" is the thoughts and feelings of the ancients when writing, it is likely that the calligrapher reached the realm of empathy with the ancient calligraphers when writing; If "Yi" refers to the charm of calligraphy works, it may be that calligraphers deliberately study the styles of ancient calligraphers. For example, in Wang Duo, there are works in the style of learning Mi and Wang, which can also be called Yi and Gu Hui. But it is also possible that the author realized the author's feelings when imitating historical sites, and words and feelings have ancient meanings. In addition, it is also possible that the author thinks that he has reached this state after reading it, but this is written after writing, or it is possible that others think that they have reached this state after reading it.