Finely chop pork, onion, carrot, garlic chives, and napa cabbage.
Season the ingredients with soy sauce, minced garlic, sesame oil, and pepper, then mix well.
Place the filling onto a dumpling wrapper and shape it into a round dumpling.
Pour water into a steamer, bring it to a boil, then add the dumplings.
Steam over high heat for about 15 minutes.