How do I adjust the temperature of the Xiaomi Compact Hair Dryer H101?

To turn on the unit, first make sure the power switch is set to the OFF [O] position, then insert the power plug into the socket, then push the power switch to select the appropriate airflow level.
Tip: Set the power switch to [I] for Low speed and push the power switch to [II] for High speed.
Switching air temperature: Short press the air temperature switch button to cycle through Cold air and Hot air modes.