Cut the beef into bite-sized pieces.
Julienne the onion and bell pepper.
Heat cooking oil in a pan and stir-fry the beef.
When the beef is about halfway cooked, add the onion and bell pepper and stir-fry together.
Finely chop the Cheongyang chili pepper, add it, and season with soy sauce and pepper.
Beat the eggs, pour them into the pan, and gently scramble.
When all the ingredients are cooked through, it's ready to serve. Place in a serving dish.