Cut tofu and pork into bite-sized pieces.
Wash the bean sprouts thoroughly and remove excess water.
Slice the onion and green onion.
Put the pork in a pan and stir-fry.
When the pork is half cooked, add the onion and green onion and stir-fry.
Add tofu and bean sprouts and stir-fry together.
Season with soy sauce, chili powder, garlic and other seasonings.
Stir-fry until all ingredients are cooked, then serve.