Whisk together the light soy sauce, cornstarch, 1 teaspoon of sugar, and pepper in a large glass or ceramic bowl. Add the chicken breast and toss to evenly coat. Cover the bowl with plastic wrap, and marinate in the refrigerator for 10 minutes.

Heat the water in a large skillet over medium-high heat until boiling. Quickly stir in the chicken and cook for 3 to 4 minutes. Chicken will not be cooked through. Drain the water and place chicken on a plate. Set aside. Carefully wipe down the skillet and heat the vegetable oil over medium heat. Cook and stir the ginger and garlic until fragrant. Stir in the chicken, black beans and 1 tablespoon of sugar. Cook the chicken breasts until no longer pink in the center. Stir in the red and green peppers, green onions, carrots, oyster sauce, and thick soy sauce. Cook and stir for 1 minutes.