Zen is a type of traditional Buddhism that originated in China in the 7th century and later spread to other East Asian countries like Korea and Japan. It places emphasis on meditation practices like Zazen, which involves sitting in a particular position. Zen is also associated with the use of Koans, which are paradoxical questions used in teaching to help students transcend logical thinking. Some cultural practices associated with Zen in Japan include tea ceremonies, flower arranging, rock gardens, origami, and Noh theater.