Above the gray fog

[Mystery] + [Magic Potion] + [Race] + [Civilization]
A hundred years later, I am a hero, my experience becomes a story, and the people praise me.
A thousand years later, I am a legend, my story becomes an epic, and I pass it down from generation to generation.
Ten thousand years later, I am a belief, my epic becomes a myth, and the incense never stops.

ps. Another name for this book: Above the Gray Mist
ps. The background is the development of the human race, and it is more like a personal epic, not a farming article.
ps. It is not a completely mysterious flow, and as it develops, it will involve some science fiction.