My Supreme Identity Has Been Discovered

Once the most promising heir of his clan, the third young master was exiled ten years ago due to a family decree.   
Saved from an assassination attempt by his cousin, he was taken in by the Lin family, where he lived a humble life as a son-in-law, married to Lin Shuyu.  Now, with the decree lifted, he’s ready to build his own power and prepare for a return to his family, aiming to reclaim his rightful place in the hierarchy.    
But as he uncovers the mysteries of his mother’s enigmatic lineage and embarks on a search for his missing mother, he stumbles upon an even greater secret—a hidden world beneath Earth’s surface.