The heroine, Shen Yan, Princess Minghua, nicknamed A Yan. Used and dragged into the struggle for the crown, she died a miserable death; after rebirth, carrying her memories from the past life, clear-headed and daring to flirt, single-mindedly avoiding disaster and seeking revenge, making up for her debts. The hero, Xie Zheng. Commander of the Imperial Guards. Murderous and cold-faced, holding the imperial city's forbidden army, the whole court fears him. In his youth he received the princess's kindness, deep-hiding many years of adoration, strictly observing the rules of ruler and subject, yet toward Shen Yan alone he is extremely restrained and humble, willing to wager his life for her.