The Caodong School is a prominent school of Zen Buddhism that originated in China during the Tang Dynasty. It emphasizes direct experience and meditation, focusing on the practice of zazen, or seated meditation, as a means to attain enlightenment. The school is known for its teachings on the importance of mindfulness and the realization of one's true nature. In the 12th century, the Caodong School spread to Japan, where it became known as Sōtō Zen. This branch of Zen emphasizes the practice of sitting meditation and the idea of "just sitting" as a way to experience the present moment fully. The teachings of the Caodong School continue to influence Zen practitioners around the world today.