Six rites are ancient rewards for teachers. That is, at school, students give their husbands six kinds of food: dried meat, celery, dried longan, lotus seeds, red dates and red beans.

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Yin-Guo Hou, a writer of literature and history, explained that this is an allusion borrowed from ancient times to express teachers' salary, which started with Confucius, the founder of Confucianism, and has a history of more than 2,500 years. The Analects of Confucius said, "I have never been ignorant of tying myself up." Confucius said that as long as I offer it to my students, I am not unwilling to teach him. It means bacon and dried meat (bacon), and binding means binding 10 pieces of bacon together.

In ancient enlightenment education, schools were divided into family schools, private schools and private schools. No matter where you teach, teachers will be treated with courtesy and respect. When parents bring their children to register, they often need to bring a teacher's gift as tuition fees to the teacher. How much is the teacher's gift appropriate? Confucius formulated the golden mean, that is, restraint. It means bacon and dried meat (bacon), and binding means binding 10 pieces of bacon together.

Later, Shu Bian became an allusion to tuition fees, but it was a reward for teachers when they entered school, and it was the main source of income for teachers. The word "beam" is also used in "Jin Shu Murong Hui Zai Ji": "On the plain, Liu Zanru wants to enlighten and lead Dong Yao as a wine offering ceremony, and his monarch leads the country to beam." During the Sixteen Kingdoms period, Murong Mu, the former founding monarch of Yan State, asked Liu Zan, a famous scholar, for advice in his early years, and also took beef jerky as an apprentice.

"Tie it to the thinnest." According to Zhu, a scholar in the Southern Song Dynasty, 10 piece of bacon is not a big gift. However, the material living standard in ancient times was not high, and meat was a luxury, so it was not easy for ordinary people to eat meat. At that time, there were no refrigerators and freezers, so it was very difficult to preserve meat. If you can't finish eating that day, first cook the meat thoroughly with water, then wipe it evenly with salt and hang it under the eaves to dry in the shade, just like air-dried bacon. When taking the children to see the teacher, tie the dried meat into a bundle and let the husband enjoy it slowly.

Although Confucius set the standard of tuition fees, he also adhered to the principle of equality. Among the 3,000 disciples, Yan Hui, Luz, Shang Bo, Ran Qiu, Zhong Gong, Yuan Xian, Bo Niu and others were all poor students from poor families, and they were not turned away because no one could afford a bundle.