Zen (Japanese: 禅) is a school of Mahayana Buddhism that originated in China during the Tang dynasty, known as the Chan School (Chánzong 禪宗), and later developed into various sub-schools and branches. From China, Chán spread south to Vietnam and became Vietnamese Thiền, northeast to Korea to become Seon Buddhism, and east to Japan, becoming Japanese Zen.
Japanese Zen strongly emphasizes dhyāna, the meditative training of awareness and equanimity. This practice, according to Zen proponents, gives insight into one's true nature, or the emptiness of inherent existence, which opens the way to a liberated way of living.
Paul Reps