Cut the chicken into small pieces.
Dice the tofu into bite-sized cubes.
Chop the green onion and garlic.
Add cooking oil to a pan and stir-fry the green onion and garlic to bring out the aroma.
Add the chicken and stir-fry until cooked, then add Doubanjiang.
Add the tofu and the measured amount of water, then bring to a boil.
Season with soy sauce, sugar, and pepper.
Add starch water to thicken.
Drizzle with sesame oil and plate.