Shan Juan was a worthy man of antiquity. Emperor Yao heard that he had attained the Dao and thus faced north to study under him as a teacher. After Yao completed his reign, Shun also offered to yield the world to Shan Juan.
Nie Que was a man from the time of Emperor Yao. Xu You was the disciple of Nie Que.
Bei Yi (or Pi Yi) was a man from the time of Emperor Yao. Yao’s teacher was Xu You; Xu You’s teacher was Nie Que; Nie Que’s teacher was Wang Ni; and Wang Ni’s teacher was Bei Yi.
8.19The Master said, “Greatest, as lord and ruler, was Yao. Sublime, indeed, was he. ‘There is no greatness like the greatness of Heaven,’ yet Yao could copy it. So boundless was it that the people could find no name for it; yet sublime were his achievements, dazzling the insignia of his culture!”