Creating Stir-Fried Chinese Garlic Chicken is straightforward if you follow these simple steps:

1. Prepare the Chicken: In a bowl, combine the sliced chicken with soy sauce, oyster sauce, and cornstarch. Mix well and let it marinate for about 10 minutes.
2. Heat the Oil: In a large skillet or wok, heat the vegetable oil over medium-high heat until shimmering.
3. Cook the Chicken: Add the marinated chicken to the skillet. Stir-fry for about 5-7 minutes until the chicken is cooked through and no longer pink.
4. Add Garlic and Ginger: Stir in the minced garlic and ginger, cooking for an additional minute until fragrant.
5. Add Vegetables: Toss in the bell peppers, broccoli, and onion. Stir-fry for another 3-5 minutes until the vegetables are tender yet crisp.
6. Season: Taste and add salt and pepper as needed. Stir well to combine all flavors.
7. Serve: Remove from heat and serve immediately over cooked rice or noodles.

By following these steps, you can easily create a delicious Stir-Fried Chinese Garlic Chicken dish that is sure to impress.