Reheat fried rice in a hot skillet or wok with a splash of oil or water. Heat quickly over medium-high heat, tossing often to warm through. The added oil or a little soy sauce restores moisture and flavor. For microwave reheating, sprinkle a little water over rice, cover, and microwave in short bursts, stirring in between.
Avoid overcooking during reheating; quick, high heat preserves texture and prevents drying out.