Comedic scene
Zhai Tianyu did not say anything, he simply walked alongside Ji Yu. What she said was actually the truth, he pitied Xiao Lin because she was used as a pawn by someone else in their game but he did not sympathise with her, what she got was something that she deserved for trying to kill someone who was innocent.
When Ji Yu saw that he was not speaking, she did not say anything either. If this was the past she would have thrown a tantrum asking Zhai Tianyu why he did not care about people whom she cared about but after last night, she realised that the world was like this, those who are important to her may not necessarily important to others.
This was something that she needed to both accept and understand before moving on to her next step.