Heat the peanut oil in the wok and fry the spring onions and garlic for about 30 seconds. Now fry the peppers, chilli, water chestnuts and zucchini for 2-3 minutes. Now add the oyster mushrooms, bean sauce, rice wine, soy sauce, sugar and water to the wok and cook for another 4 minutes.
Finally, drizzle with the sesame oil and serve immediately.