Qian Yikun asked Lil Zhao to inform Lawyer Liu of what had happened while he continued staring at Lin Xuan, who was feeling smug now that she got someone to back her up.
Wu Biao's death must have had something to do with the last piece of news he posted. And after Wu Biao's death, he received another recording that could allow him to ruin Ding Junqi's name.
If he claimed that there was no concrete evidence that the news that Wu Biao last published had anything to do with Lin Xuan, the whole fiasco with the recordings that Ding Junqi exposed already informed the entire country that Lin Xuan was the culprit. Therefore, the police had sufficient reason to arrest Lin Xuan.
Lawyer Liu listened and turned to look at Lin Xuan. Her arrest was indeed justified.