The book is one of exhortation books in ancient China, a motto style known for its brief length and profound philosophy. It is simple and clear in language, brief in words and honest in affection, just like a prestigious elder who talks with youngsters, profound and inspiring. Although the words in the book are mainly about exhortation, they are vivid in reading instead of being obscure, combining seemingly profound philosophy into daily life which arouse people s resonance.