Lin Ziyin felt somewhat uncomfortable and unable to cope with the intimate gestures Chu Suifeng made towards her. She thought she had made it clear to him the last time they spoke. He shouldn't be making such intimate gestures towards her, whether in public or private.
If such ambiguity were to get out, she would have a hard time explaining herself, even if she had a mouth all over her body.
Congyi and the others automatically kept their distance, not daring to look around. Those around Lin Ziyin frowned at Chu Suifeng's actions, finding them too bold. But given Chu Suifeng's status and that he was bandaging her wounds, it seemed justifiable. Everyone was frozen in the moment, unsure of what to do. The key point was, Lin Ziyin hadn't spoken up. Wasn't it up to everyone else to stop Chu Suifeng's actions?