Slice the onion thinly, cut the red paprika into thin strips, and chop the coriander into bite-sized pieces.

Cut the pork belly into 3cm pieces and season with a pinch of salt and pepper.

Mix the sauce ingredients (fish sauce, ketchup, sugar, and oyster sauce) in a bowl.

Place the steamed Chinese noodles in a microwave-safe container, cover loosely with plastic wrap, and microwave at 600W for 1 minute to loosen.

Heat salad oil in a frying pan over medium heat, add pork belly, and stir-fry until the color changes. Add onion and stir-fry for 2 minutes until softened.

Add noodles, red paprika, and bean sprouts to the pan, stir-fry briefly, then add the sauce and mix well.