In which dynasty did Yao and Xu appear respectively?

Preface appeared in Shang Dynasty, and Yao appeared in Zhou Dynasty.

Shang called the school order, and Zhou called it embarrassment. Throughout the ages, schools have names such as "School, Order, Yao, Xue, imperial academy"; It is called "school" in summer, "preface" in business and "east" in week, all of which are the nature of private school running. Zhou Xu refers to ancient local schools, which were later called schools or educational undertakings.

In ancient China, schools were called "East", "Virtual", "Learning", "School" and "Skill". As the name of an ancient school, "Dong" is not only recorded in many ancient books, but also has different interpretations. For example, the Book of Rites says, "You will be old when you are at home, and old when you are at home." Zheng Xuan's Note: "I went to Shandong, went to school on the right, went to college, and was also in the western suburbs. Xiayi, Zuoxue and Primary School are also in the east of Zhonggong. "

The origin of Xu Xiang

1, "Mencius Hui Liang Wang Shang": "I would like to teach in the order of filial piety."

2. "Han Dong Zhongshu Biography": "Establish a university to teach the country, set the order to change the city."

3. "Old Tang Dynasty Book, Confucian Biography and Xiao Deyan": "I have never heard of it since Sui Dynasty."

4. Song Tiankuang's "The Scholars' Public Discussion" volume: "At that time, Shandong people Shi Jie and Sun Fu were good at alcohol Confucianism, expressing their chest directly, praising each other and eager to make a preface. However, there are so few scholars that it is impossible to convince them.

5. "The Biography of Zuo Xiong in the Later Han Dynasty": "Jiuqing is in charge of three things in Asia, the class is in charge, there is a festival of wearing jade, and there is a device to make it."

6. Tang Xuanzang's Record of the Western Regions in the Tang and Warring States Period: "Monks and nuns are solemn and solemn, and all the instruments are out of order."