What’s Bluetooth gateway?How to connect?

Function Settings:
(1)What’s Bluetooth gateway?
Gateway is the ability built into part of Mi Home intelligent devices (currently: Bluetooth gateway, Bluetooth Mesh gateway, Zigbee Gateway, Infrared gateway), which can help the corresponding type of sub-devices access the network, and realize remote viewing or control of sub-devices;Bluetooth gateway, more single Bluetooth devices can be quickly connected to the Internet, to achieve more rich functions.At the same time, Bluetooth has the advantages of low power consumption, wide application and low cost.
(2)Which device supports Bluetooth gateway?
You can view which devices support the Bluetooth gateway through Mi Home APP>>Profile>>Help & Feedback>>BLE gateway.
(3)How does Mi Temperature and Humidity Monitor connect to Mi Bluetooth gateway?
When the Bluetooth device and the Bluetooth gateway device are bound to the same Xiaomi account, and the Bluetooth gateway is in the state of networking, then the device accessing the Internet through the Bluetooth gateway and the Bluetooth gateway are placed nearby (within the distance of Bluetooth broadcasting, normally within 10 meters without interference), the connection can be completed automatically (network access).