Cut beef and shrimp into bite-sized pieces.
Finely chop onion and green onion.
Heat oil in a pan and stir-fry the beef.
When the beef is halfway cooked, add shrimp and vegetables, and stir-fry.
Add rice and mix well while stir-frying.
Season with soy sauce, salt, and pepper.
Once everything is well stir-fried, it's ready to serve.