In a bowl, mix together, chicken, soy sauce, garlic, shaoxing wine, white pepper, baking soda, water, and oil. Squeeze the chicken to break it down slightly and let it marinate for 15 minutes.
2 pounds chicken thighs, 2 tablespoons shaoxing wine, 4 tablespoons soy sauce, 1 teaspoon baking soda, 1 garlic clove, 1 teaspoon white pepper, ½ cup water, 2 tablespoons oil