How many days does criminal detention usually take? If a lawyer intervenes, how long will it take to get out?

Generally, it takes 3 days, the case is complicated for 7 days, and the partner commits crimes for 30 days, and escapes for many times. You can hire a lawyer after being detained, but the role of a lawyer in detention is only to understand the charges, complaints, accusations, and applications for bail pending trial. Only after being arrested can you consult the file and fully intervene in the case.