To cook the rice, in a rice cooker, cook the rice with water using a 1:1 ratio, then spread it out and let it cool or refrigerate until dry.
To marinate the chicken, in a bowl, mix the chicken with the salt until absorbed, then add the white pepper, egg white, cornstarch mixed with water, and cooking oil and mix well, then marinate for 10 minutes.
To make the sauce, in a bowl, mix the soy sauce, oyster sauce, and white pepper.
To stir-fry the chicken, in a wok over high heat, add 1 tablespoon of cooking oil and cook the chicken until fully cooked, then remove.
To stir-fry the vegetables, in the same wok over high heat, add 1 tablespoon of cooking oil and stir-fry the onion, peas, and carrots briefly, then remove.
To finish the fried rice, in the wok over high heat, add the remaining cooking oil and scramble the eggs until just set, then add the rice and break up any clumps, return the chicken and vegetables, add the sauce, and toss until evenly combined, then finish with the scallions.