Chicken with satay sauce

Name: Chicken with satay sauce
Ingredients: 450g/1lb boneless, skinless chicken breasts, cut into 2.5cm/1in cubes; 1½ tbsp groundnut (peanut) oil; 3 tbsp light soy sauce; 1 tbsp shaoxing rice wine or dry sherry; Salt; Freshly ground black pepper; 2 tsp cornflour; 3 tbsp sesame paste or smooth peanut butter; 1 tbsp chilli bean sauce (available from asian grocers); 1 tbsp coarsely chopped garlic; 2 tsp chilli oil; 2 tbsp chinese white rice vinegar or cider vinegar; 2 tbsp light soy sauce; Freshly ground pepper; 2 tsp sugar; 2 tbsp hot water; 50g/2oz thinly sliced onions; 100g/4oz thinly sliced cucumbers