As the old saying goes, if a worker wants to do a good job, he must sharpen his tools first.

If a worker wants to do a good job, he must sharpen his tools first, which means that if a craftsman wants to do a good job, he must sharpen his tools first. It is very important to prepare for a good job.

Confucius, The Analects of Confucius, Wei Linggong: Zi Gong Qiu Ren. Confucius said, "If a worker wants to do a good job, he must sharpen his tools first. Living in a country is also a saint and a doctor, and a benevolent person is a friend of the people. "

The Analects of Confucius: A collection of recorded essays in China's Spring and Autumn Period, which mainly records the words and deeds of Confucius and his disciples. Reflects the thoughts of Confucius. It was compiled by Confucius disciples and re-disciples. There are 20 books and 492 chapters in the book, which is the first "documentary". In the Southern Song Dynasty, Zhu, Mencius, the University and the Doctrine of the Mean were called "Four Books".

Editors, mainly Zhong Gong, Zi You and Xia Zi, first discussed ways to draft a memorial for teachers and worry about losing them. Zhong Gong, Zi Gong and several disciples who stayed in Lu relayed it and initiated the reading of chapters and sentences. Therefore, Confucianism in China said: The invention of chapters and sentences began in the summer.