Like his name, I guess Master Rushan should be a monk. Some time ago, we held a New Year Guqin concert and book launch. There is a place in Beijing called Rushi Shanfang that was probably founded by him. For example, Shanfang teaches guqin, tea ceremony, calligraphy, traditional Chinese painting, etc. It is a good place for literary and artistic leisure. I haven't seen much about the level of Guqin, but with a monk's character, Guqin wouldn't be too bad. If he were a real monk, his level would definitely be guaranteed. The following is the Douban website of Rushi Shanfang. If there is contact information, you can ask it yourself.
/124790/
There is also the website of the recent press conference
/event/18071895/