Cut the beef and napa cabbage into bite-sized pieces.
Heat oil in a pan and stir-fry the beef.
When the beef is about halfway cooked, add the napa cabbage and continue stir-frying together.
Once the cabbage softens, add the rice and mix and stir-fry evenly.
Season with soy sauce and salt.
Sprinkle pepper on top, then plate the finished fried rice.