A teahouse was naturally a place to drink tea. The teahouses on earth were all alike. To stand out from the crowd, one needed to be unique.
The teahouse before them was without doubt the most outstanding amongst its competitors. After initiating many different programs, it was not just a place to drink tea. One could also watch dancers dance gracefully, and taste good, quality beer. If a literate was inspired, he could raise his brush and write in the main hall, or showcase his calligraphy skills, or demonstrate his talent for painting. From time to time there were poetic meetings where famous guests from all around were invited to appreciate the fine arts.
Of course, the truly famous scholars were difficult to invite.
As such, the teahouse adopted the next best option: The "scholars" they invited were not that famous, but they had talent.