Thinly slice the beef against the grain for tender and juicy meat.Soak the rice noodles in hot water for a few minutes before cooking to soften them.Prepare all the ingredients beforehand for efficient and smooth cooking.Use a non-stick skillet or well-seasoned wok to prevent the beef from sticking.Adjust the spiciness of the dish by adding more or less red chilies to suit your preference.Garnish the bowls just before serving to maintain the freshness of the herbs.