Name a chinese emperor that is overthrown by his brother?

i am writing a novel, set in around 700-1100 CE ancient china. it is about the emperor's brother trying to usurp the emperor. Can you name any emperors? i have the inspiration in a dream. as a psychic, i have already dreamt of one novel set in 1226 CE, with real characters who i could never know, as i hate chinese history. so i hope to be able to write another story. if you wanna read the story, email me, but i'm afraid its in chinese.