1. Heat the oil in the pan for seven minutes. Add chopped ginger, garlic, pepper, onion and star anise and stir-fry until fragrant.

2. Stir-fry the shrimps and add some water.

3. After the fire boils, add soy sauce, vinegar, sugar and salt.

4. Cover the lid, simmer for 20 minutes, and finally collect the juice.

5. Sprinkle a little chives.