Cut the pork shoulder into bite-sized pieces.
Slice the onion and green onion thinly.
Heat some cooking oil in a pan and stir-fry the pork shoulder.
When the meat is cooked, add the onion and green onion and continue stir-frying together.
Season with soy sauce, minced garlic, pepper, and sesame oil to taste.
When all ingredients are well-cooked, turn off the heat.