Pay back revenge

Is weiyue death really just a coincidence? Weiyue, an woman who is favor by many. A innocent girl who unseemly not know what her parents work is. unexpectedly died from cardiac arrest, wanting to vent her unsettling soul to someone who killed her when it was supposedly an accidental death only. Could it be someone really tried killing this innocent girl?
xiaxia, an regressor possess the weiyue body seems to be suspicious of weiyue's death so she tried finding out the truth but without knowing the consequences. xiaxia face the great threat all her life. although xiaxia asked weiyue spirit "do you remember who you are?" that made weiyue furious at xiaxia and said "dont mind my past! find out the killer who killed me immediately".