Cut shrimp, squid, and pork neck into bite-sized pieces.
Slice vegetables such as onion and bell pepper into easy-to-eat pieces.
Add cooking oil to a pan and stir-fry the pork neck.
When the meat is halfway cooked, add shrimp and squid and continue stir-frying.
Add the vegetables and stir-fry together.
Season with soy sauce, minced garlic, and black pepper.
Continue stir-frying until everything is thoroughly cooked.