Ke Qinghong left, while simultaneously unravelling the doubts in Kitamura Chiyuki's heart.
Facing Ke Qinghong's departure, Ye Xunhuan and Kitamura Chiyuki didn't attempt to keep him, and even if they tried, they probably couldn't have succeeded.
Moreover, they had no reason or necessity to forcefully retain Ke Qinghong.
After all, Ke Qinghong wasn't hostile to them, at least not currently.
After Ke Qinghong left, Ye Xunhuan turned his gaze to Kitamura Chiyuki: "You know my identity?"
"I... I..."
For a moment, Kitamura Chiyuki couldn't bring herself to meet Ye Xunhuan's eyes, as his gaze was exceptionally sharp at this moment.
"It seems that what Ke Qinghong said is true." Ye Xunhuan already got the answer he wanted from Kitamura Chiyuki's reaction: "But how did you find out?"
