Dream of the Three Kingdoms

She is just a time-travelling bun who wanders into another world. She is arrogant and has no ambitions, but she just wants to be her senior brother's good baby. Song Yin: "Senior brother, what's more important is me or the world." Senior brother: "Be good... I'm busy, playing by myself." Look! The world is still important. Holding my son's hand and growing old together... What a beautiful promise, but it's just my wishful thinking.