How to connect Mi Smart Kettle Pro to Mi Home App?

When connecting for the first time, close to the kettle, open Mi Home App, click "+" in the upper right corner, click to search for Mi Smart Kettle Pro icon, the page prompts the operation of "Please long press the kettle boiling button for 3 seconds (the kettle will not boil water) to complete the pairing. "Wait for the additions to be completed and then you can use it.