Turpan, which is so hot in summer, has been favored by a group of strange people in recent years. The hotter the weather is, they do the opposite, rushing from all over the country to Turpan for sand therapy, health care, tourism and leisure, high-temperature test and environmental testing. Why? Aren't they afraid of high temperature exposure? Turpan, the only holy place for sand therapy in China, has the best sand therapy resources in the world. The sand here is rich in trace elements such as magnesium, phosphorus, iron, calcium, zinc, tin, etc., which is helpful to promote blood circulation, dispel cold and dehumidify, and thus cure diseases. The history of Uygur compatriots in Turpan using sand therapy to treat diseases can be traced back to the excavation of Karejing in the Western Han Dynasty, which has a history of more than 2,000 years. At that time, the workers who dug the culvert of Karez well bowed their heads in the cold and humid environment for a long time. Many workers got arthritis and rheumatism, but they were all cured by burying sand and passed on. From June to August every year, the average temperature in Turpan is as high as 38℃-42℃, and the sand temperature can reach 78℃-80℃ during the day. In Turpan Sand Therapy Center, Huoyan Mountain and Kumtag Desert, people set up outdoor sand therapy stations and indoor sand therapy stations on scattered sand dunes according to local conditions. Patients with rheumatism, wind-cold arthritis and lumbago and leg pain should bury their knees or half-length in the sand, steam them on the upper side and burn them on the lower side. One course of treatment takes 10- 15 days, and it usually takes three courses to recover. The Turpan basin, surrounded by mountains on three sides, is dry and lacks rain, oases, desert beaches and Gobi. In people's impression, the deserted Gobi has always been a symbol of desolation, but smart Turpan people have also found business opportunities from the deserted Gobi. According to the relevant national standards, the "three highs" test must be carried out before the car leaves the factory, that is, cold test, high temperature test and plateau test. During this period, the newly listed models must be exposed to the sun for 1-3 years. Before the establishment of the automobile exposure test base in Turpan, for a long time, domestic automobile companies often spent a lot of money to transport their cars to the United States for testing, or set up a simulated high-temperature laboratory for indoor testing. However, indoor simulated high temperature test is often different from outdoor natural environment test, and the test data is not accurate. In 2009, Turpan Natural Environment Research Center was formally established and put into operation, which was used to carry out dry and hot environment detection experiments, filling the gap in China. Many domestic and foreign material manufacturers, automobile enterprises, aircraft manufacturers, air-conditioning enterprises and scientific research institutes all regard Turpan as the first choice for hot zone experiments. Products that need high temperature testing every year in all parts of the country should be taken to Turpan for drying.