Pull up a small chunk of flour about 1/4 handful and make in a ball. Knead dough inwards with fingers then indent the middle so that it looks like a doughnut. Add dumplings to pot and cook for ten minutes before adding chicken. Cook for ten more minutes then add yam, corn, regular potatoes, sweet potatoes, cho cho and blocks of pumpkin quarters with skin. Cook for another ten minutes then add chopped pumpkin, chopped carrots, carrot blocks and cook for another ten minutes.