I Am an Illegitimate Child, Who Puts the Yellow Robe on Me?

Yang Yun traveled through ancient times and became an illegitimate son. He was bullied by his stepmother and younger brother all day long. How does this work? Yang Yun immediately rose up to resist, but unexpectedly, he was appreciated by the empress of the dynasty by accident, and he prospered ever since. Don't you dislike my illegitimate son's life? Why are you kneeling when you become the emperor's son-in-law?