There were books in the Tang Dynasty. Of course, Li Bai can choose to save his works in the form of books, but Li Bai is a bold and unconstrained person. After all, he is a poet, and we all know that Li Bai likes to write poems after drinking, so many of his poems may not be in books, but they were very popular in ancient times. My friend is away from home and separated from Wan Li. When expressing their love, they express their admiration and gratitude to someone.
Li Bai also often sends poems to friends, and likes to learn poetry skills from friends. As far as I know, Li Bai also likes to travel around the mountains and water. He invites three or two friends to drink together, see the mountains and water together and talk about life together. They often travel to various famous scenic spots in our eyes. In ancient times, they also liked to carve poems on stones and walls. I think some of Li Bai's poems should have been carved when he was playing, and later I saw him write them.
In addition, there was a kind of people in ancient times who liked to collect poems of famous people and compile them into a complete book. This is a hobby and a profession. The works of many outstanding poets have been preserved in this form. It is said that many of Li Bai's poems have also been compiled into books, but many of them have been lost in the historical evolution. What we see now should be preserved.