Chang 'an Avenue of Stars automobile air conditioning filter box is a black square box under the passenger seat in the car. The specific steps to find this filter box are as follows:
1. Open the driver's door of Changan Starlight.
2. Pull up the handbrake of Changan Starlight Automobile to avoid slipping during operation.
3. Open the passenger seat lock of Changan Starlight.
4. Open the passenger door of Changan Starlight.
5. Turn the passenger seat of Changan Starlight Automobile back to look at the filter box.