Buddhism played an important role in the development of Japanese art between the 6th and the 16th centuries. Buddhist art and Buddhist religious thought came to Japan from China through Korea. Buddhist art was encouraged by Crown Prince Shōtoku in the Suiko period in the sixth century, and by Emperor Shōmu in the Nara period in the eighth century. In the early Heian period, Buddhist art and architecture greatly influenced the traditional Shinto arts, and Buddhist painting became fashionable among wealthy Japanese. The Kamakura period saw a flowering of Japanese Buddhist sculpture, whose origins are in the works of Heian period sculptor Jōchō. During this period, outstanding busshi (sculptors of Buddhist statues) appeared one after another in the Kei school, and Unkei, Kaikei, and Tankei were especially famous. The Amida sect of Buddhism provided the basis for many popular artworks. Buddhist art became popular among the masses via scroll paintings, paintings used in worship and paintings of Buddhas, saint's lives, hells and other religious themes. Under the Zen sect of Buddhism, portraiture of priests such as Bodhidharma became popular as well as scroll calligraphy and sumi-e brush painting.