What is the central gateway function on the Xiaomi Mesh System BE3600 Pro?

The central function of the main router in the Xiaomi Mesh System BE3600 Pro is the main central gateway. When used with other Xiaomi smart devices (Wi-Fi devices and sub-devices connected to the main gateway/slave gateway), it can achieve local automation and local control within the LAN when in the same home and LAN.
Note:
1. “The same home” mentioned above represents that the devices need to be configured in the same home in the Mi Home/Xiaomi Home APP. Besides, the devices and the gateway need to be in the same Wi-Fi environment;
2. The sub-router and the single Xiaomi Mesh System BE3600 Pro have Bluetooth Mesh gateway function, but do not have central gateway function.