In a Pan heat butter add garlic onion saute for 2-3 minutes. Now add chicken, cook it til the chicken becomes pale in color. Add carrots first cook for 4-5 minutes,then add beans cook for 4-5 minutes,then add bellpeppers and corn, cook it for 5-10 minutes.
Add sugar,salt,vinegar and black pepper powder. Add 4 cups of chicken stock let it boil. In a small bowl mix cornflour with half cup of water. Pour it in the soup and stir ,cook for 5-8 minutes. And its ready to serve.