1. A bag of bovine bones, clean the blood.
2. Put it in a pressure cooker and add water, not over the beef bones.
3. Press for 40 minutes.
4. Peel the tomatoes,
5. Dice.
6. Add bottom oil to the pan, pour the tomatoes and stir fry.
7. Pour the beef bones.
8. Add the beef bone broth and use a spoon to remove the layer of oil on the beef bone before adding the soup. Add tomato sauce, five-spice powder, and simmer over medium heat for 30 minutes.
9. Add pasta and heat for 10 minutes on medium heat.
10. Add soy sauce salt to taste and it's fine.
11. It's ready to be eaten in a plate.
