Strategy Guide for Tyrant Through the Book

The princess was killed and married to the tyrant of the Yelang Kingdom. Everyone knew about it, and everyone knew about the abandoned queen, but she changed her past...! She is the top agent of the 21st century, and she traveled through time to the concubine princess. The moment she opened her eyes, another system was in her mind! Finding medicine, rescuing people, changing your appearance, upgrading and fighting monsters in palace battles are all a breeze! As for "pampering"... "Your Majesty, can you give me some pampering?" The man smiled evilly, "I've given you the country and the country, isn't it enough?"