Cut the soft tofu and vegetables into bite-sized pieces.
Heat cooking oil in a pan and sauté minced garlic and minced ginger.
Add ground pork and stir-fry until cooked through.
Add onion and green onion, and continue stir-frying.
Add chili oil and red pepper powder, then mix well.
Add doubanjiang (fermented bean paste), soy sauce, and sugar to make the seasoning sauce.
Pour in broth and bring to a boil.
Add the soft tofu and gently stir while simmering.
Add starch water to adjust the thickness.
Transfer to a plate and sprinkle with black pepper, sesame oil, and chopped scallions.