01 - Combine beef slices, 1 tablespoon soy sauce, cornstarch, and sesame oil in a bowl. Mix thoroughly and let rest for 10 minutes.
02 - Heat 1 tablespoon vegetable oil in a large wok or skillet over high heat. Stir-fry marinated beef 1 to 2 minutes until browned. Remove and set aside.
03 - Add remaining 1 tablespoon vegetable oil to the pan. Stir-fry garlic, ginger, and scallion whites for 30 seconds until fragrant.
04 - Incorporate carrots and red bell pepper; stir-fry 2 to 3 minutes until slightly tender. Add peas and cook 1 additional minute.
05 - Push vegetables aside, pour in beaten eggs, and scramble until just set. Combine eggs with vegetables.
06 - Add chilled rice to the pan. Stir-fry 2 to 3 minutes, breaking up clumps and mixing evenly.
07 - Return beef to the pan. Add soy sauce, oyster sauce, toasted sesame oil, and white pepper if using. Toss to coat and cook 1 to 2 minutes until heated through.
08 - Remove from heat. Sprinkle with scallion greens and serve immediately.