1. Prepare the ingredients by soaking the noodles according to the package instructions, slicing the chicken into bite-sized pieces, peeling and deveining the shrimp, and dicing the onions and garlic. Thinly slice the vegetables like cabbage, carrots, and bell peppers.

2. Heat cooking oil in a large pan or wok over medium heat. Sauté the onions and garlic until they become fragrant and translucent to form the aromatic base.

3. Add the sliced chicken to the pan and stir until it is browned and cooked through. If using pork, cook until golden brown, and for shrimp, add them last and cook until they turn pink.

4. Once the proteins are cooked, incorporate the sliced vegetables into the pan. Stir-fry everything for about 3-5 minutes, ensuring the vegetables remain crisp but slightly tender.

5. Add the soaked noodles to the pan and gently mix them into the vegetables and proteins. Pour soy sauce and oyster sauce over the noodles for flavor. Use tongs or a fork to ensure the noodles are evenly coated and integrated with the ingredients.

6. Adjust seasoning by adding salt and pepper to taste. Squeeze in some calamansi or lemon juice for a fresh, zesty finish.

7. Garnish with sliced boiled eggs, crispy chicharron, or chopped green onions, if desired, to enhance the texture and presentation of the dish.

8. Serve warm and enjoy the authentic flavors of Filipino Pancit with family or friends!