On your second day, visit the Crescent Lake and Singing Sand Dunes. Located just outside Dunhuang, these natural wonders are a must-see. Start by exploring the Crescent Lake, a small oasis in the middle of the desert. Take a leisurely walk around the lake and admire the stunning views of the surrounding sand dunes. You can also take a camel ride or try sandboarding for a thrilling experience. Afterward, head to the Singing Sand Dunes, known for the unique sound they produce when the sand is disturbed. Climb to the top of the dunes for panoramic views of the desert and enjoy the exhilarating experience of sliding down the slopes. End your day with a peaceful sunset at the dunes, as the colors of the sky reflect on the golden sand.