Cube the tofu into 2cm pieces.
Finely chop the green onion, garlic, and ginger.
Add cooking oil to a pan and stir-fry the pork.
Add the minced garlic, ginger, and green onion to release their aroma.
Add chili oil, Doubanjiang, soy sauce, and cooking wine, and stir-fry together.
Pour in water and bring to a boil.
Add the tofu and simmer on medium heat for 5 minutes.
Add the starch water to thicken the sauce.
Drizzle with sesame oil and sprinkle pepper, then transfer to a plate.