To marinate the chicken wings: Use bamboo skewers or a fork to poke holes all over the chicken wing flats. This helps the marinade penetrate and speeds up cooking. In a mixing bowl, add the chicken, soy sauce, rice wine, white pepper, and garlic. Mix well and marinate for at least 5 minutes. You can marinate longer for deeper flavor.
To coat the chicken wings: On a plate, add the rice flour. Dredge each wing flat in the rice flour until fully coated. Rice flour gives a light, crispy texture and is naturally gluten-free.
To fry the wings: In a pot over high heat, heat the cooking oil to 325°F (163°C). Carefully place the wings into the oil, one at a time. Fry for 5 minutes, or until cooked through. Remove and drain.
To double-fry and serve: Increase the oil temperature to 350°F (177°C). Return the wings to the oil and deep-fry for another 2 minutes, or until extra crispy. Remove and place on a paper towel-lined plate to drain. Serve hot.