The man the Gaang meets before entering Aunt Wu’s village is wearing a framed:
Jin are caps of civilian usage. Jin with the use of frames can also be called Ze (幘), and are deemed more formal than the unframed ones.
This means he is not a government official, i.e. he is not the village leader.
The screen in Aunt Wu’s waiting room has calligraphy in Grass Script on it. Grass Script is a highly stylized version of calligraphy and while extremely beautiful also extremely hard to read. I cannot read it.
草书; sometimes translated as Grass script (see Names below) is a style of Chinese calligraphy. Cursive script is faster to write than other styles, but difficult to read for those unfamiliar with it. It functions primarily as a kind of shorthand script or calligraphic style. People who can read standard or printed forms of Chinese may not be able to comprehend this script at all.
Follow this link to more examples of Chinese calligraphy, all of them which we see at one point or another in the show.
