Southern school of Zen ［南宗禅］ ( Nanshū Zen): The school derived from Hui-neng (638–713), the sixth patriarch of Chinese Zen (Ch’an). His teacher was Hung-jen, the fifth patriarch. Hung-jen had another able disciple named Shen-hsiu, who spread Zen in northern China and started what came to be called the Northern school of Zen. While the Northern school soon declined, the Southern school prospered and became the mainstream of Chinese Zen. It is divided into five branches—Ts’ao-tung ( Sōtō), Yün-men (Ummon), Fa-yen (Hōgen), Kuei-yang (Igyō), and Lin-chi (Rinzai). The Lin-chi school eventually produced two more schools, the Huang-lung (Ōryū) and Yang-ch’i (Yōgi).