Professor Chengqing Xia is the chief pathologist of Shengting Medical Technology. He graduated from the Department of Pathology of China Union Medical University and was the director of the Department of Pathology of Beijing Chao-yang Hospital, Capital Medical University. He has been to Singapore, the United States and other places to participate in training and academic exchanges. In 2000, Professor Xia was also the first person to carry out flow cytometry immunophenotyping study on lymphoproliferative diseases in China. A total of more than 60 papers were published, including 3 SCI papers. He won second prize of Chinese medical science and technology, first prize of Beijing science and technology progress, and first prize of Beijing Municipal Health Bureau.