Destroy Ghosts but Not Souls

There are ghost slayers and soul warriors in this world. Ghost slayers destroy ghosts, and soul warriors transport souls. The name of the sword is Crossing Souls, but it is used to destroy ghosts. In the previous life, Qi Fei was possessed by a demon and had no regrets, but she regretted killing Gu Wei. However, the underworld forcibly extracted her soul before she lost her mind and sent her back to the past. The body is human and the soul is demon. In this life, Qi Fei wants to change some things. The obsession in her previous life didn't seem to be important, but people who didn't appear in front of her in her previous life appeared frequently.