Chizō ［智蔵］ (n.d.) (; Chin Chih-tsang): A priest of the Three Treatises (Chin San-lun;  Sanron) school. Born in China, he went to Japan in the seventh century, was naturalized, and studied the Three Treatises doctrines under Ekan (Kor Hyekwan) of Gangō-ji temple. (Ekan was a disciple of Chi-tsang who systematized its doctrines and is regarded as the first patriarch of the school.) Thereafter Chizō went to China where he furthered his study of the Three Treatises doctrines under Chi-tsang. On his return Chizō taught the Three Treatises doctrines at Hōryū-ji temple. The doctrines of the Three Treatises school were transmitted to Japan on three occasions, and the transmission by Chizō is regarded as the second. The first was the transmission by his teacher, Ekan, in 625. The third was by Chizō’s disciple, Dōji, who went to China in 702 and returned to Japan in 718. When the imperial court ordered the transcription of the entire collection of Buddhist scriptures, Chizō was appointed the supervisor, and as a reward for his contribution, he was appointed administrator of priests in 673. Dōji, Chikō, and Raikō are known as his disciples. See also Three Treatises school.