Beizi begins with a poem expressing teaching and educating people.

The classic poem about teachers' teaching and educating people is that the northern country captured the rotten pavilion and learned thousands of miles from the village. Du Mu (803-852 AD) in The Snow of Du Mu, whose name is Fan Chuan, Han nationality, was a poet in the Tang Dynasty. Du Mu is called "Xiao Du" to distinguish him from Du Fu. Also known as "Little Du Li" with Li Shangyin.