What is quarantine inspection? Is there a time limit for quarantine inspection?

Mr s is the manager of a company which is engaged in landscape engineering in other provinces. He got a project by bribing 200 thousand, which was recently taken away by the public security organ in the name of assisting in the investigation! After more than ten days, my wife wanted to ask a lawyer across the province. At this time, she went to the public security organ and learned that the nature of this time has changed from assisting in the investigation to isolation review, and neither family members nor lawyers can meet with them. Why can't family members and lawyers meet them during this period? Excuse me, what is quarantine review? Is isolation review a kind of criminal detention? If it's criminal detention, why can't lawyers meet? I heard that the bribery case was closed fourteen days ago! And Mr. s has been assisted in the investigation and quarantine review for a month! Why did Mr. S's family still not get the news of his detention at this time? What should the family do at this time? When can I get a lawyer? Is there a time limit for quarantine inspection? And if you pay thousands or hundreds of bribes, will there be a cumulative sentence? If convicted of bribing 200,000 yuan, what is the maximum sentence? Hello, lawyer Wang! The current situation is that lawyers can't attend, family members can't meet, and there is no notice. What will happen? The bribery case has been closed for more than ten days. Will it be filed again at this time and this person will be tried? # @ @ # may be a double-regulation measure taken by the Commission for Discipline Inspection. It is impossible to meet each other during this period, which does not belong to the containment measures in criminal proceedings. This is a measure for party member.