After a Thousand Years of Sleep, He Wakes up and Is Invincible in the City.

The prince of a thousand-year dynasty woke up after sleeping for a thousand years and was treated as a mental patient in the hospital. He thought he was the king of the subjugation of the country, but found that the people who destroyed his dynasty were now kneeling and begging him to collect antiques - because those priceless cultural relics were things he had personally used a thousand years ago.