In a large bowl, combine the ground pork, garlic chives, garlic, ginger, soy sauce, sugar, oyster sauce, sesame oil, salt, and white pepper. Mix well until evenly combined then let the filling marinate for 15 minutes.
1.5 pounds ground pork, 1.5 cups finely chopped garlic chives, 3 cloves garlic, 2 Tbsp minced ginger, 3 Tbsp soy sauce, 2 tsp granulated sugar, 1.5 Tbsp oyster sauce, 2 tsp sesame oil, ¾ tsp salt, 1 tsp white pepper
In a small bowl, combine Chinese black vinegar, soy sauce, sugar, and chili oil. Serve dumplings immediately with the dipping sauce.
3 Tbsp Chinese black vinegar, 2 Tbsp soy sauce, 1 tsp granulated sugar, 1 Tbsp chili oil