In a large skillet, heat oil over medium heat. Add ground pork and cook until browned, about 5-7 minutes. Stir in cabbage, carrots, green onions, and onions. Sauté for another 3-4 minutes. Remove from heat to cool slightly.

Transfer the sautéed mixture to a mixing bowl. Add soy sauce, sesame oil, and pepper, stirring well to combine.

Lay out wonton wrappers. Place a teaspoon of filling in each wrapper's center. Moisten one edge with water, fold and seal tightly.

In a frying pan, heat oil over medium-high heat. Add dumplings in a single layer and fry for 3-5 minutes on each side until golden brown.

Transfer finished dumplings onto paper towels. Serve warm with your favorite dipping sauce.