Dunhuang, a historic Silk Road city in northwest China, has rich historical records of summer heat relief. In the murals of the Mogao Caves and the manuscripts from the Library Cave, ancient people not only recorded the sweltering heat but also vividly depicted scenes such as "drawing water by the well" and "retreating to the mountains for refuge from the heat," offering a genuine glimpse into how Silk Road travelers coped with the summer heat a thousand years ago.