Cut 1 lb of chicken thighs into uniform 2-inch pieces.
Marinate with soy sauce, grated ginger, grated garlic, white pepper, Shaoxing wine, and egg white. Mix well and refrigerate for at least 30 minutes, or up to 24 hours.
In a small bowl, combine five spice powder, white pepper, salt, and sugar to make the seasoning; set aside.
Coat the marinated chicken evenly in sweet potato flour, ensuring no spots are left bare.
Fry at 350°F for 3–4 minutes, then add fresh basil and cook for an additional 30 seconds.
Sprinkle with the seasoning immediately after frying, and enjoy!