His Disgust
Chenglie, For some reason didn't like that suspicious woman in there. When she was carried in a laundry basket out of the encampment, he smelt the slight smell of agarwood and he was excited it must be Xing and worried how he'd help her. But lo and behold, it is not Xing ...!
And this woman had the guts to steal Xing's clothes and made him believe it was her for a moment.... Unforgivable!
The coat she was wearing had the nine-tailed phoenix that should be worn only by the Empress. Xing wouldn't have given her that coat because she would be expecting her attackers tonight and she is not a coward to make them believe someone else as her and she is not heartless to send another woman in her place to be violated. This suspicious trash woman stole it...!
Chenglie was angry at Xing to put herself at a risk like this even though he understood why she might have planned it. It might pertain to a larger political agenda.