As a professional group, they have a high starting point and fast promotion. Almost all members of the professional group are senior bureaucrats. Even if you are a police officer like Shancun Cao who is disgraced, your promotion is faster than that of non-professional groups and amateur groups.,And the reason Tang Ze strived hard was also because of this economic downturn.,PS: A 22-year-old detective is possible, the protagonist's birthday is set later, so he is still 22 after graduation, besides, that's how twisted the occupation group is.。