Laozi, whose real name is Li Er, whose word is Bo Yang, also known as Laoxiang, was a historian who managed the collection of the Zhou royal family in the Spring and Autumn Period, that is, the director of the National Library at that time. He was considered to be the most cultural official in the country, so he was the most literate and thoughtful scholar in China at that time. Later, he retired to write a book, and the book Laozi was handed down from generation to generation.
Laozi is one of the three ancient books that have the greatest influence on China people's thoughts, and the way of thinking and behavior of China people is deeply branded as "Taoism is natural" because of this book.
Laozi is an ancient name for Lao Xiang. According to the appellation of a hundred schools of thought contend, an accomplished master is generally addressed as "XXX" by his master, and this "son" usually comes before his master's surname, such as Sun Tzu, Confucius, Mozi, Xunzi and Han Feizi. Another situation is to add a place name before "son", such as Guiguzi.