Isn’t it Normal?

Zhai Tianyu knew that he could no longer turn around and leave, so he awkwardly smiled at his brother who was standing right beside Yu Lingyun, who stood in the centre of the room with his study table behind them and a pile of scrolls lying on their right. 

He smiled to ease the awkwardness but he did not know that his smile only made Yu Lingyun even more flustered, he looked at Zhai Tianyu who was smiling at him and thought that the latter has heard what he was saying to Zhai Heng. He was an idiot! He should have gone to talk somewhere else but then someone else would have heard him! Other than the study of the Emperor where even the Dowager Empress would have to ask for permission before entering where else should he have gone?