Heat up sesame oil in a large skillet over medium-high heat. Once oil is warm, add ground pork and break it up into small pieces with a spatula or wooden spoon.
Once pork is mostly cooked through, add the garlic, ginger, onion, and mushrooms. Cook until onion and mushrooms are softened, about 5 minutes.
Add the soy sauce, splash of Chinese cooking wine then the bagged coleslaw and bok choy.
Cook until cabbage and bok choy have softened, about 5-7 minutes.
Season with salt and pepper, if needed. Serve warm in bowls.