Red roast Chinese pork

Name: Red roast Chinese pork
Cuisine: China
Ingredients: 3 or 4 red chillies, very finely sliced lengthways (deseeded if you like); ½ wine glass red Chinese vinegar; 600 g/1 lb 5 oz piece fillet of pork, membrane trimmed off; 2 garlic cloves, peeled and minced; 2 tablespoons soft brown sugar; 1 teaspoon five-spice powder; 5 tablespoons light soy sauce