Volume 4 covers the Niu-tou sect, the branch of the 4th Patriarch Doshin, and priests including Jinshu (Shen-hsiu) of the Northern school (Baisong) of Chinese Zen Buddhism (Chan) who belonged to the schools other than the Southern school (Nansong).
四祖道信傍流の牛頭宗及び、北宗神秀など南宗以外の僧