To make Pork Wontons in Red Chili Oil, start by preparing the filling. Combine hand-chopped pork shoulder with chopped scallion greens, minced garlic, egg, cornstarch, light soy sauce, pepper powder, and salt. Mix well, and set aside. In another bowl, prepare the dressing by combining chili oil, chili residue, flavored soy sauce, black vinegar, minced garlic, and sugar. Next, assemble the wontons by placing a teaspoon of filling in the center of each wonton wrapper. Boil the wontons in batches until they float to the top or the wrappers turn translucent. Using a spider strainer, transfer the cooked wontons to a serving bowl. Mix boiling water with the prepared sauce and pour over the wontons. Garnish with scallions, and serve hot.