Can anyone answer this?

#1

A long time ago I finished the novel, but I was left with a question, who was the person that the MC killed in the first elimination in order to win the elimination and leave? Apparently she was a woman and the author left us with a riddle to know her identity, and so far I have not been able to guess who that person was.

#2

Dong Xiaowen,
“Song Yan suddenly asked, “Oh right, Lan Xiao, how long has it been since you last saw Dong Xiaowen?””

#3

Dong Xiaowen? Who was? Could it be the girl who fell in love with him and had a military father?