Objective: Marry the Enemy Empress

When a mysterious explosion destroys an insane asylum, the Chief Director of asylum Yun Zhonghe is transmigrated to another world, with the memories of 29 mad genius inmates in his head. With those 29 unique skills, he joins the secret service in his new world and goes undercover as a spy in the enemy kingdom. Three years passes, then three more, and he finds himself in the position of consort to the enemy Empress, and she wants to have children with him!

(Source: Tencent, translated)