What I learned about ancient China

I learn that every great things Chinese built there are some back stories for it like The Great Wall of China which build by Shi Huangdi who force million of people to work on the project and a lot of them didn't survive or the terracotta solider tomb which again built by Shi Huangdi  who want to find the way to be immortal but after he know he can't Shi Huangdi  though that he will go on after life so he bring nearly everyone who relate to him to die with him but he can't bring all army with him so he built terracotta solider to protect him in after life.