There was someone in the meeting room holding a whip and whipping Chen Yixin's skeleton nonstop. He had a look filled with enmity, filled with unwillingness. It was as if he was venting all his rage on the skeleton, he... was Zhao Zhen.
At the other side, Qian Lan was holding a rope and pulling tightly on Zhao Zhen's neck. Zhao Zhen's neck was snapped continuously and reattached back to its original position every time while Qian Lan kept on pulling hard.
Besides Qian Lan's corpse, Chen Yixin was holding on to a saw and sawing Qian Lan's corpse nonstop.
The bodies of Zhao Zhen holding the whip, Qian Lan holding the rope and Chen Yixin holding the saw were translucent grey. It was evident that they did not really exist; they were like resentful spirits venting out their unwillingness when they died. Perhaps this was related to the layout of the conference room; after they died, their spirits could not transcend and could not be scattered; they were trapped over here.
[1] My biggest guess is author-sama is implying Aroma had a hunch he was Su Bai since she was so obsessed with him.