Prepare the chilli dressing - peel and finely chop the garlic and peel and slice the shallots. Heat half the oil in a large shallow frying pan and cook the garlic, shallots and chilli for 1-2 minutes. Add the soy sauce, sugar and water and cook for a further 2-3 minutes until slightly syrupy, then set aside.
Heat a medium-sized griddle or frying pan, brush the steaks with the remaining oil on both sides and cook according to your preference. (Based on a ¾" - 2cm thick steak: Rare: 2½ minutes on each side. Medium: 4 minutes on each side. Well: 6 minutes on each side). When cooked, leave to rest in a warm place for 2-3 minutes.
Slice the beef on the diagonal and arrange over vegetable rice or Chinese Fried Rice. Pour over the sauce and serve immediately with a green salad.