Who is the prototype of Liu Jian in the debate between black and white?

Liu Jian's prototype is the captain of Xi 'an Beilin Branch. According to the relevant public information, the prototype of Liu Jian in the black-and-white dispute is the captain of Anbeilin Branch. This film and television drama is based on the real case of Xi 'an, and many policemen in the drama are also played by the police of Xi 'an Beilin Branch.