i recommend re-reading chapter 29.1 and 29.2 - syphilis right away : https://mangadex.org/chapter/739196/1
the manga artist already left some clues / hints about the real identity of the noseless woman in these 2 chapters :
- some xiangqi pieces are dropping from her hand .
- this hair-style is the one of the young fon shen in chapter 37 : https://mangadex.org/chapter/1127625/4