Picking up a General and Her Husband: a Manual for Fat Wives to Counterattack

After traveling through time, not only did she become a fat woman, but she also became seriously ill and had no money to pay for medical expenses and used her jade pendant as collateral. After careful care, he finally recovered, and then he started a weight loss plan. The danger is approaching little by little, and the identity is blurred. What is the identity of the seriously ill patient he picked up?