My Tenant Is the Prince of the Ming Dynasty

"I, a restorer of ancient books in the 21st century, rent out the west wing of the courtyard. The new tenant is handsome, but his words and deeds are ancient. He watches the stars at night, and calls himself the Prince of the Ming Dynasty. I thought he was in the late stage of secondary disease, until he took out the real gold seal of the palace... What's even more terrifying is that he investigated the case and found ancient books passed down by my family, and asked me: 'Girl, are you willing to help me reverse the case?'"