Female protagonist: Lin Weiwei, a modern independent woman, may be a social animal/history lover/complainer, cheerful, witty, a little lazy but reliable at critical moments, possessing modern knowledge and thinking, and occasionally can't help but complain about ancient rules. After rebirth, he became Ulanara Shulan.
Male protagonist: Yinzhen (fourth elder brother), in the early stage, he was a cold-faced, taciturn, diligent and rigorous prince, with ambition and softness in his heart. Attracted by the uniqueness of the heroine, from confusion and curiosity to deep love, she was gradually led to become more humane.