What was the name of the person who protected the princess and killed the assassin in ancient times?

The rise of diners began in the Spring and Autumn Period and the Warring States Period. The "guest" is attached to the host, and the host is responsible for "supporting the guest", with more than 3,000 customers.

Diner-type fortune tellers are also attached to a master, usually taking refuge in the homes of princes and nobles, or wandering among literati and bureaucrats, predicting their future and avoiding misfortune, or acting as "counselors" and "military advisers".