Are there any calligraphy works written by Teacher Jun Yun?

There is no such thing. Calligraphy works without rhyme.

Calligraphy works are a relatively complete form of expression of calligraphy art and also a form of entertainment.

The styles of calligraphy works mainly include nave, banners, horizontal stripes, couplets, plaques, long scrolls and fan faces. Calligraphy works are divided into soft pen and hard pen, that is, brush and pen, and also into "style", such as regular script, official script, running script, cursive script, seal script, swallow script and so on.