Does the subject want to ask "Is Ma Tao a policeman?" ? Used to be a policeman. Ma Tao is the manager of the electric power company. He used to be a special police officer in the drug squad. He used Yang Jian's relationship to engage in malicious competition and illegal transactions. Yang Jian and Tang Xiaolong also asked him to threaten the guest house waiter and put cards in the lunch box of the guidance group.