Cut tofu, mushrooms, zucchini, and onion into bite-sized pieces.
Heat cooking oil in a pot, then sauté minced garlic and green onion.
Add chili powder and stir over low heat to make chili oil.
Add pork (or seafood) and stir-fry together.
Add onion, zucchini, and mushrooms, and sauté lightly.
Pour in water or broth and bring to a boil.
Season with soup soy sauce and salt.
Add soft tofu and gently stir to simmer.
Add an egg, bring to a boil once more, then finish.