Winter Melon and Fish Ball Soup

Ingredients:
winter melon
pork ribs
4 red dates
1 tbsp wolfberries
6 cups water
12 fish ball
salt

Methods:
1. Peel and cut the winter melon into chunks.
2. Scald pork ribs with boiling water.
3. Bring water to boil.
4. Add all ingredients (except fish ball) into the pot. Bring to boil for 20 minutes.
5. Reduce the heat to low and simmer for 1 hour.
6. Add in fish ball and season with salt before serving.