1, pour the ribs and boil them in water.
2, ribs to blood foam.
3. Add ginger and ribs, add 1.5 liters of water and cook for 30 minutes on medium heat.
4. Add wax gourd and cook on low heat 10 minute.
5, add salt, stir well, serve, sprinkle with chopped green onion.
6. Serve in a bowl.