Laozi was born in the Spring and Autumn Period and the Warring States Period. Why did he later become a mythical old gentleman?

In fact, I think Laozi should be an incarnation of the old gentleman on earth. Don't these fairy tales, including some movies and TV plays that reflect this theme, have some respected masters, or some immortals in the sky, or fairies who came to Du Jie to help the world? This is an experience for themselves, and it is also an act that they come to the earth to help ordinary people and benefit the world.

It is said that some immortals who have made mistakes, or who want to improve themselves, will choose to go down to earth to experience, but when they go down to earth, if they go down to earth directly, they will certainly attract the panic of everyone on earth. After all, in ancient books, the immortals described are all in a halo of fine clothes, traveling everywhere and traveling thousands of miles a day. The clothes they wear and the things they take may not be on the earth.

Therefore, in order to avoid these unnecessary troubles, immortals will choose to become mortal when they come down to earth, wearing and using the same clothes as ordinary people, so that they can understand the sufferings of the people and deal with some people on earth, and those who come into contact with immortals will not be suspicious or doubt their identity. It is a sin for immortals to expose their identity, and it is absolutely impossible for ordinary people to know their identity.

Therefore, it should also be out of some consideration. Taishang Laojun either wants to improve his lifestyle or dedicate the life of the universe to the mortal world, so he chose to come to Lao Zi at such a special time. He borrowed Laozi's identity to tell the world the eternal truth, to tell the world the existence of Taoism, to help people who are confused on earth to solve their doubts and to contribute to the life of the universe. In fact, besides Lao Zi being his incarnation, there should be other incarnations of the old gentleman in Taishang.