www.youtube.com/embed/pY1kORvBEYs ```html 24-Hour Deliciousness in Nonhyeon: Discovering Authentic Vietnamese Cuisine at Haikhan Craving late-night eats or an early morning breakfast with a Vietnamese twist? Look no further than Haikhan (하이칸), a 24-hour Vietnamese restaurant conveniently located near Nonhyeon Station in Seoul. This hidden gem offers a taste of Vietnam at incredibly reasonable prices, making it a must-visit for food lovers, especially those in the Gangnam area. Must-Try: The Irresistible Banh Mi Haikhan's Banh Mi is a standout dish. As soon as you see the menu on the…