Su Qing swore that he really didn't intend to use his narration to get any information from these two men. He simply found Ma Guodong annoying and wanted to use Li Zijun, 'Li Tou's' authority to send them to the detention center and 'host' them, and to avenge the innocent insults he received yesterday.
One's a loan shark with a bit of a thug attribute, even threatening to check his info and get revenge. That's a real pain in the ass.
The detention center is a place where suspects involved in a case are held before being judged by the judiciary, under the jurisdiction of the public security department. In such places, they can have a say, and the guards inside are not called prison guards but detention center police, which belong to the police series.
