Since ancient times, the official Dojo of Buddhism has been called Temple, An 'an, Lecture Hall, Jingshe and Lan Ruo, and most of them are temples. Taoism is called temple, palace and view.
The name "Rock", as a religious place for the founder of Shimizu, means that it belongs to a part of folk beliefs, that is, it takes some Buddhism and some Taoism and forms a unique folk belief with local characteristics.
Because it does not belong to orthodox Buddhism, it is a phenomenon to give him three sacrifices as gifts, which is also one of the characteristics of folk beliefs.
It just doesn't conform to the universal values of a certain religion. For example, everyone knows that Buddhism is a vegetarian, and Buddhism does not draw lots, but Qingshuiyan seems to have it, because although it was born out of Buddhist figures, it is not orthodox Buddhism.