Although the woman's appearance was identical to that of the female ghost in the Soul-collecting Bottle, through his Yin Yang Eyes, Chen Hao discovered that the Yin Soul of the woman, who was revered by the other bound spirits as the Sect Hierarch's wife, had a completely different appearance.
Suddenly, the four words "To borrow a body for resurrection" entered Chen Hao's mind. Clearly, that woman had been resurrected by Luo Pengfei using the spell of borrowing a body to return a soul.
As for why Luo Pengfei would do so, Chen Hao guessed that he had never forgotten the woman who was willing to throw herself into a well to die with him.
However, Chen Hao could not understand why Luo Pengfei, if he had not forgotten that woman, would heartlessly seal her Yin Soul at the bottom of the well, instead using another Yin Soul to revive her flesh and keep it by his side?