Reborn as an Orphan, She Went Crazy to Marry the Queen.

[Rebirth and time travel + substitute queen + palace intrigue + long-term love + strong showdown + career-oriented heroine + emperor pursuing his wife + family, country and world] Medanya was reborn as the most unlucky noblewoman in Beizhao Kingdom. He killed his biological mother when he was just born and was abandoned to be raised in a nunnery for fourteen years. Once she returned home, she was actually asked to take her sister's place in the palace as queen and become a pawn for the family to gain power. The whole capital was laughing at her for being an ignorant orphan girl in the nunnery, waiting to see her fall from the back seat. However, she took the palace examination, recognized talents with a keen eye, rectified the administration of officials, promulgated new policies, and provided pensions to military families. It only took her half a year to go from an abandoned daughter in the cold palace to a benevolent queen praised by all people. At first, the young emperor only regarded her as a pawn to consolidate his imperial power, but late one night, he blocked her in the imperial study: "Queen, in this game of chess... I seem to have played myself into it."