Heat the oil in a pan.
Sauté the garlic and onions. Continue to cook until the onions are caramelized.
Add the tomato. Cook until soft.
Put-in the shrimp and cooking wine. Cook for 5 minutes.
Add the bok choy. Stir. Cover and cook for 3 to 5 minutes.
Add salt and pepper to taste.
Transfer to a serving plate