Lan's task is to assassinate Cai Yong and his family. The next task is to capture Cai Wenji alive and bring Cai Wenji back to be Cao Cao's adopted daughter. Because the story is pure fiction, Lan has no specific historical prototype. Monroe, who broke the news before, has only similar skills. Wu was a general in history, which contradicted Lan's background, so Lan's historical prototype was not.
Lan's background story:
Lan, who was exiled, grew up with orphans. They live a poor life, but they still have the simplicity and happiness of children.
However, when the war was burning here, Lan and his friends were attacked. At the moment when his life hangs by a thread, the shark in Lan wakes up and protects other partners. Frightened friends shouted for help ... Since then, no one dared to associate with Lan, and he was completely isolated.
Whenever Lan wants to use her own ability to protect others, she always gets more frightened eyes, gradually getting cold and getting used to being alone.
Because of frequent wars, Lan can always save his life in the chaotic battlefield with the help of sharks. This orphan who climbed out of the battlefield like purgatory was adopted by Cao Cao.
Cao Cao adopted many orphans and taught them all kinds of brave fighting skills. Orphans all respect this adoptive father, because it's better than starving to death on the street, and Lan thinks so.
Since then, Lan has learned more things, including good knife skills, but his heart has been closed.