Wen Qinxi could tell Qie Ranzhe was in a horrible mood so he left immediately only to bump into Airen. Misunderstanding her reason for being outside, he said, "You can go back to bed. I have handled it," while patting her shoulder before going back to his room.
Actually, Airen didn't leave. She had a bone to chew with Qie Ranzhe so she silently waited for him to come out. After having found out from Feng Zi earlier on why Qie Ranzhe shot him, she was here to take revenge. She personally witnessed the meticulous care Feng Zi had towards Zhao Huangzhi only to turn around and be accused of assault. Airen was not only going to deal with Qie Ranzhe but also his mouthy girlfriend so she stood in wait. One of them was bound to come out soon.
Please check out Venerable Demon King & The Doting Immortal