1. Soak dried radish in water. Cut ginger in strips. Cut coriander stem and leaves, shred coriander stem and cut coriander leaves in pieces. Dice 3 pieces of dried radish. Cut the rest of radish in strips. Peel winter melon and take out the seeds. Dice in large cubes.
2. Heat the oil and stir fry radish and ginger. The stir fry with winter melon. Pour in rice wine. Put in chicken broth. Cover the lid and cook in mid-heat for 20 minutes.
3. Mix minced pork, radish and coriander. Put in marinade and stir well. Put in 1 Tablespoon of water. Stir the mixture in clockwise. Then knock the mixture. Divide the mixture in small pieces and roll as meatballs.
4. Open the lid, put meatballs in soup. Turn to mid-low heat, then boil the meatballs for 5 minutes. Put in pepper, sesame oil and coriander leaves.