1. Press the brake pedal of JAC Ruifeng.
2. Twist the car key of JAC Ruifeng and start the engine.
3. Run the engine until the water temperature rises to 90 degrees.
4. Twist the wind speed switch to turn on the air conditioning system.
5. Press the internal circulation button to start the internal circulation mode.
6. Turn the temperature adjustment switch to the rightmost red area and turn on the warm air.