4. Wanli started to send a name, and the Quartet simply advised Nong Sang. -Excerpted from three poems about Du Xiang by Ceng Gong, a poet in the Song Dynasty. Fame spread to Wan Li, schools opened, and farmers were persuaded to learn from all directions.
5. If the monarch has politics and religion, it must be a school. -Excerpted from Song Dynasty poet Xia Zheng's "Send Du Zhilian Prefecture". If people want to be educated and thoughtful, they must start from school.