Wash and prepare the soybean sprouts.
Slice the green onion and onion.
Cut the pork into bite-sized pieces.
Heat oil in a pan and stir-fry the green onion to make green onion oil.
Add the pork and stir-fry.
Add the onion, soybean sprouts, and seasoning sauce, then stir-fry together.
Once the ingredients are cooked, transfer to a plate.