The Xiaomi Mesh System BE3600 Pro doesn't support the central gateway function, but it supports Bluetooth gateway.
For your reference, here are more details about the Bluetooth gateway function of the router:
1. The Bluetooth gateway function within a router enables it to act as an intermediary between Bluetooth devices and the Internet, allowing those devices to connect to the network remotely.
2. A Bluetooth gateway can serve as the central hub for a smart home, enabling the creation of smart scenes among connected devices to facilitate automation between them.
3. Many Bluetooth devices cannot connect to the internet directly. By connecting to a Bluetooth gateway, remote control and data synchronization between Bluetooth devices can be achieved.