In a wok with the oil already hot, add the garlic and stir-fry for about 10 seconds, or until it turns golden brown

Add the red and green peppers, cucumber, tomatoes, onion, and pineapple and then, whisk in the tomato ketchup

Add the rice vinegar, Chinese wine, soy sauce, and sugar, and then stir to thoroughly combine well

Stir-fry the tofu for 30 seconds, then top with spring onions to serve.