Rinzai Gigen(?–866) was the founder of the Rinzai school of Zen Buddhism during Tang Dynasty in China. Rinzai was trained by the Chan master Obaku. His own teaching was inspired by his master's, and was characterized by abrupt, harsh encounters with students, aiming to bring about the moment of enlightenment. His methods included shouting and striking, most often using the fly-whisk that was considered a symbol of a Chán master's authority.