1. First, boil the spaghetti until soft and serve.
2. Heat up a pan, pour an appropriate amount of olive oil into the marinated beef tenderloin, stir fry for a while until the color changes.
3. Add assorted vegetables and stir fry together.
4. Stir-fry evenly, add a little salt, chicken essence, and pepper.
5. Then pour in the spaghetti sauce and boil.
6. Pour in the soft boiled spaghetti and stir well.
7. Turn off the fire and put it into the nine-story tower.
8. Finally, sprinkle a little black pepper and serve on a plate.
