Chinese Chicken Currey(Fijian style)

Ingredients
Veggies:
1/2 small onion
1 carrot
2 stalks celery
1 cup broccoli
Chicken marinade:
2 Chicken Breast
2 tsp ginger
3 tsp Garlic
1 tbsp dark soy
1 tbsp light soy
black pepper
Sauce:
1/2 cup Chicken stock
1 tbsp currey powder
1 tsp chinese 5 spice
1/2 tsp tumeric
1/2 tsp chili powder
1 tsp corn starch
1 tsp sugar