Beijing, May 20 (Youth.cn) - On May 19, 2025, an aerial view captures Aiken Spring in Huatugou Town, Mangya City, Haixi Mongol and Tibetan Autonomous Prefecture, Qinghai Province. Aiken Spring is a geological landscape feature with a spring opening exceeding 10 meters in diameter and a depth surpassing 1,000 meters. The water temperature remains around 30 degrees Celsius year-round, and the spring spurts up to half a meter high. Its striking resemblance to a human pupil has earned it the nickname "Devil’s Eye." In August 2023, it was designated as a National AAA-level Tourist Attraction. Photo/CFP