1. Prepare the ingredients, marinate the beef slices with oil for a while
2. Cut the green peppers and sweet potatoes
3. Add oil to the pot and heat it up
4. Add beef slices
5. Stir-fry for one minute
6. Add green pepper shreds and stir-fry
7. Add Stir-fry the sweet potatoes for a while
8. Add appropriate amount of salt and stir-fry with appropriate amount of chicken essence
< p>10. Installation