No, it's an alternative reality, as a "What if the battle that occurred 17 years ago didn't take place"
but in the scene when qi min died in the prison, before that qi min asked her about her hometown (she once told qi min that only if she die, so she can go back where she is coming from), and later outside the prison, she told changyu she came from far, far away. and most likely she cannot go back anymore.
so it is like she is not from that era, she is someone from future.
now i on ep 5. can anybody spoil me in what episode does Shen Zaiye know about FL's hardship back then in Beiyuan? and in what episode he knows about the poison ?
so it is like she is not from that era, she is someone from future.