Cut the smoked duck into bite-sized pieces.
Prepare the onion, bell pepper, zucchini, and broccoli into easy-to-eat pieces.
Heat oil in a pan and stir-fry the vegetables first.
When the vegetables are half-cooked, add the smoked duck and stir-fry together.
Season with salt and pepper.
Cover with a lid and steam on medium-low heat for 5 minutes.
Transfer to a plate and serve.