1. Wash tomatoes and cut into pieces.
2. Peel the wax gourd, wash and cut into pieces.
3. Wash the egg shells, knock them into a bowl and beat them into egg liquid, add a little cooking wine and mix thoroughly.
4. Heat the wok and put the oil, add the tomatoes and stir fry, turn to a low heat to pick out the tomato skins, add the winter melon and stir fry.
5. Turn to high heat, add water and bring to a boil, cook on medium heat for about 10 minutes.
6. Pour in egg liquid, appropriate amount of salt, turn to high heat and bring to a boil.
