The detention time in the detention center cannot exceed 15 days, but if it is 4~5 months, it is not in the detention center. It's in the detention center. Of course, you won't be notified if you are not sentenced in the detention center. Besides, if you enter the detention center, it is not a general case, and it is not so easy to be sentenced, because you will not be notified if you have to go through the procedure for more than half a year. The only way to know his situation is to find a lawyer.