Finely chop the cabbage and place it in a bowl. Sprinkle with salt and let it sit for about 30 minutes to draw out excess moisture.
Rinse, squeeze out all the liquid, and pat dry with a paper towel.
In a large mixing bowl, combine ground pork, prepared cabbage, green onions, garlic, ginger, soy sauce, oyster sauce, sesame oil, Shaoxing wine, sugar, white pepper, salt, and chicken bouillon powder.
Mix well with your hands or a spatula until everything is evenly combined and slightly sticky.
Place a dumpling wrapper in your palm. If it feels dry, lightly wet the edges with water.
Spoon a small amount of filling (about 1 teaspoon) into the center.
Pinch the center of the wrapper closed. Then, starting from the center, make small pleats toward the middle on one side—about 2–3 folds. Fold in the corner and pinch.
Repeat on the other side, then pinch the ends tightly to seal. Continue wrapping until all the filling is used.
You can pan-fry, steam, or boil the dumplings — whichever you prefer!
* Pan-fry: Crisp the bottoms in oil, then steam with water until cooked through.
* Boil: Cook in boiling water until they float to the top.
* Steam: Steam over medium-high heat for 10–12 minutes.