1. Peel potato and cut in chunks. Take out bell pepper seeds and cut in chunks. Cut onion in chunks. Shred garlic.
2. Cut wingette in half. Marinate wingette with marinade for 10 minutes. Heat the oil, pan fry wingette. Take it out when turn golden.
3. Stir fry garlic and onion, then put in dried chili and chili sauce. Put back wingette in pan, then stir fry with potato. Put in Shao Xing wine, dark soy sauce, sugar, soy sauce and 1 cup of chicken broth. Cover the lid and cook in mid-heat for 10 minutes.
4. Put in 3 colour bell peppers in high heat. Thicken the sauce with cornstarch water. Put in Sichuan pepper oil, stir well.