The Prince Regent's Substitute Bride: He Spoils Me to the Heavens

Take a look. This woman is called Xiao Meng. After a car accident while out, her soul travels to ancient times. The regent, Han Linchuan, suffers from an incurable illness, so the emperor decrees that the eldest daughter of the Tang family, Tang Jiao, marry him to bring him good fortune. Tang Jiao has been doted on by her family since childhood, so the second daughter, Tang Meng, is forced to take her place as the bride. Tang Meng doesn't want to marry him either, so she poisons herself in the bridal sedan. When Tang Meng arrives in her place, she discovers that Han Linchuan isn't ill at all. Someone has placed a curse on him. So she summons a demon immortal to help. But who could have guessed she'd summon a little prince abandoned by the fox clan...