According to the website of Gansu Provincial Public Security Department, Ma Shizhong, male, Han nationality, born in April 1962, from Weifang, Shandong Province, joined China nationality in June198/00, and joined the work in July. He graduated from the School of Environmental Science and Engineering of China Ocean University with a postgraduate degree.

At the same time, there is no relevant information about Zhu Laisheng on the website of Gansu Provincial Public Security Department.