Lihua was the only daughter to empress of an emperor in her human days, she was married to other empire's son and become his empress.
Although for her marriage with him wasn't a happy ending as he had multiple consorts and enjoyed showing them off to Lihua's face and to those in the palace.
It's was embarrassing for her as the palace started to act like their emperor's new flavor of the day was the empress and not Lihua, until Lihua put her foot down and made sure her as empress would never be challenge again.
She give him his only heir, as the consorts were only giving him daughters
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Although for her marriage with him wasn't a happy ending as he had multiple consorts and enjoyed showing them off to Lihua's face and to those in the palace.
She give him his only heir, as the consorts were only giving him daughters