- Heat a wok over high heat. Add vegetable oil and wait until it turns hot.
- Add chopped garlic and chillies, and stir fry for 1 min.
- Add morning glory, salted soybean, oyster sauce, and sugar. Stir fry for about 2-3 mins over high heat.
- When the morning glory is cooked, turn off the heat and transfer the dish to serving plate. Serve.