Li Chengye jumped off the building.
When he opened his eyes again, he became the cheap brother of a twelve-year-old girl. The little girl's name was Wu Zhao, later Wu Zetian.
He originally wanted to live alone and wait for death, but he was forced to embark on the road of raising his sister-fighting clans, fighting lawsuits, avoiding pursuit, using construction site slang to teach her how to be a good person, and using his experience as a foreman to help her build connections.
The little girl learned quickly, from timidly pulling on his clothes to daring to stand in front of the official and speak for him.
"Brother, when I become powerful, I will protect you."
Li Chengye smiled and rubbed her head, but he was getting more and more panicked.
He knows history. He knew that the little girl in front of him would become China's only female emperor in the future, and she would kill decisively and die alone.
What he didn't know was whether the things he taught her were helping her survive, or pushing her towards the path of no return.
On the day Old Man Cui died, Wu Zhao did not cry.
She just held the case file in her arms and said, "I want to enter the palace."
Li Chengye looked at her and suddenly realized that he could no longer understand this girl.
There was something in her eyes that he had never seen before - it wasn't hate, it wasn't fear, it was something he couldn't stop.
"Wait for me," she said as she left.
Li Chengye stood outside the palace gate and watched the door slowly close.
He didn't know if she would come back.
He only knew that from today on, she was no longer the little girl who needed his protection.