At this time, she couldn't focus on herself because of what she was seeing in front of her eyes. Cao Haoran was cornered from all sides as his entire body was full of blood. Traces of exhaustion could be seen on his face as he gritted his teeth and continued fighting.
Despite being an immortal, there was a way to kill them. If another immortal attacks the immortal before their ascension, the immortal level cultivators would really end up dying brutally if attacked by the same power as him. Only after reaching the heavens can an immortal be truly called one, but of course, even the immortals in the heavens can be killed if attacked by the similar kind of energy or demonic entity.
So in truth, even the ones in the heavenly realms also weren't eternal in a sense. They can be called immortal because they can live longer and can't be killed by anyone aside from the immortals themselves.