https://factburger.com/filmburger/movie/zen-2011
Zen – In the early 1200s, Dogen brought Chinese Zen philosophy to Japan, and established the Japanese Zen sect of Buddhism. He taught that a person was capable of realizing Buddhahood within himself, by way of Zazen. Zazen is extended hours of sitting and meditating to achieve a state of “Mu” (nothingness, or empty existence).