Creating Crispy Chilli Beef Rice is simple if you follow these steps:

1. Prepare the Beef: In a bowl, combine cornstarch, salt, black pepper, garlic powder, onion powder, and chili powder. Toss the beef strips in this mixture until coated evenly.
2. Heat the Oil: In a large pan or wok, heat vegetable oil over medium-high heat until hot.
3. Fry the Beef: Add the coated beef strips in batches, frying until golden brown and crispy. Remove and drain on paper towels.
4. Sauté Vegetables: In the same pan, add sliced bell peppers and onion. Sauté for about 3-4 minutes until slightly tender.
5. Add Garlic: Stir in minced garlic and cook for another minute until fragrant.
6. Combine Sauces: In a small bowl, mix soy sauce, sweet chili sauce, and oyster sauce. Pour this mixture over the sautéed vegetables and stir well.
7. Add Beef: Return the crispy beef to the pan, tossing it with the vegetables and sauce until well combined.
8. Serve: Spoon the crispy beef and vegetables over a bed of cooked rice. Garnish with chopped spring onions.

This straightforward approach allows you to create a flavorful and satisfying meal with minimal fuss.