Married to the Sword Immortal, Not Made a Tycoon

Gu Changsheng transmigrates as the frail Seventh Prince of Great Jing and is immediately forced into a marriage with a female Sword Immortal from an enemy nation whose cultivation has collapsed and is plagued by evil qi. Everyone waits for him to die in the bridal chamber, turning him into the royal family's biggest joke, but at the moment of despair, Gu Changsheng awakens a system and bonds with Ling Shuangyue. Together, they establish a foothold in the imperial city, shatter one conspiracy after another, defeat the Third Prince, and are appointed as the Regent Crown Prince. During this time, they build a deep emotional connection and become true husband and wife.