Can you explain the words Historical Records, Traditional Chinese Opera, Central Reservation System and Hotel Management System and talk about their relationship?

Shiji is the agent maintainer of the opera system, and the central reservation system is a reservation system that can be synchronized with the hotel management system (for example, if you book a room in a city on the reservation network of a hotel brand, then you will create a central reservation system CRS, and then send it to the hotel management system of the corresponding city according to its networking port or hotel code). Hotel management system is a system to manage the whole hotel. PMS system is a module in the whole hotel management system, also known as property management system, which is often used in housekeeping department or finance department. Opera is a brand of hotel management system and a product of micros.