1. First, peel and slice the prepared wax gourd with a knife.
2. Then put the stock and wax gourd slices into the pot.
3. Then put some pepper.
4. Bring it to a boil.
5. Then put the salt into the pot and stir well.
6. Sprinkle the prepared chopped green onion in the pot.
7. Mix well and serve, so that the winter melon soup is finished.