Minor word", highly frequently used in the notes and comments on poetry in the Song Dynasty, refers to short poems rather than a pejorative term attached to poems by people in the Song Dynasty.

The evidences in the historical records of ancient character and handwriting proved that China had some transportation means such as "carts" and "boats" on the system of "message passed by cart".

Discard the Dross and Select the Essential ,Eliminate the False and Retain the True-Professor Song Li-ren s Insight into Research of Materia Medica Literature;