1. Prepare raw materials, cut chicken into pieces, add white pepper, salt, cooking wine and marinate for 5 minutes.
2. Pat the garlic cloves and dice the red onion for use.
3. Cut the white onion and purple onion into large pieces.
4. Take a small bowl, pour the sauce into the mouth, and mix it with raw sauce.
5. Blanch the green beans for use. When blanching, drop a few drops of oil and a little salt to keep them green.
6. Take an iron pot, heat it, pour in the oil, stir fry the garlic and red onion, pour in the chicken, fry the oil slowly with a small fire, the skin is burnt and fragrant.
7. You can put the onion in the pot.
8. Pour in the sauce, add a small bowl of water, cover and simmer for 5 minutes.
9. Open the lid of the pot and see that the juice is collecting. Sprinkle some ground black pepper powder to improve the fragrance.
10. Finally pour in the blanched green beans and stir them with a spoon.