Start by combining sliced chicken with soy sauce, Shaoxing wine, cornstarch, and oil. Let it sit for 5 to 10 minutes. This helps the meat absorb flavor and tenderize slightly before cooking.
Heat a teaspoon of oil in a large wok or skillet on medium-high. Add the beaten eggs and scramble gently until just set, then move them to a plate. Next, add another teaspoon of oil and stir-fry the marinated chicken until it's cooked through and lightly browned. Remove and set aside.
In the same pan, add another teaspoon of oil. Sauté the shallot (or onion) and garlic until fragrant, about 30 seconds. Toss in the peas and carrots, stir to combine, and cook just until vegetables are tender but still bright.
Now add the cold rice, breaking up clumps so each grain is separate. Pour in your sauce mix around the edges so it “toasts” slightly. Toss well, then return the chicken and scrambled eggs to the pan. Stir everything together for another minute or two until well combined and heated through.
Taste and adjust seasoning if needed (add more soy or pepper). Finish with the dark green parts of scallions if using. Serve right away while still hot and aromatic.