What exactly is this case like?

There are many regulations on the detention period of criminal cases. I don't remember exactly. The general detention period is twelve hours, which seems to be three days. However, if you apply for arrest, it will be delayed for four to seven days. If you formally file a case, you will be detained for about one month. It will be extended later, but it seems to have little to do with this case. Judging from what you said. If it is more than three days, it may mean that the case is more serious. At least it's on file. I'm afraid the situation is not good. But also sent to the detention center, the general inquiry is in the police station. Personally, I don't feel very good. . . I suggest you consult a lawyer in time. Don't wait for the police to inform you of the formal arrest, it will be too late. Moreover, due to the lack of experience in dealing with trials, there are also cases of extorting confessions by torture. If you haven't come out for more than three days, it means that you have entered criminal proceedings, and you must ask a lawyer. Don't take any chances.