Lanzhou San Tang Ai Hospital is the first batch of third-class first-class hospitals in China, and it is a military central hospital with glorious tradition and history. 1939 was founded in the revolutionary holy land of Yan 'an, formerly known as Bethune International Peace Hospital. Famous international friends such as Bethune and Ke Dihua have all worked in hospitals. The hospital with a history of nearly 100 years has created their high-quality technology and service, and it is also one of the demonstration hospitals that the people of the whole country can rest assured! Dr Zhang Wei is the director of urology in this hospital. In the process of treating "baby with stones" caused by "Sanlu" milk powder in 2008, Director Zhang Wei immediately found that Sanlu milk powder was the "culprit" leading to sudden stones in infants, and took the lead in actively treating critically ill children in China, and successfully treated them in various provinces and cities without any clinical successful cases and professional equipment1kloc-0/65438.