Quan Li was defeated, his head the only part left after being bombarded by two punches from Ye Tianchen. Once his head was smashed, his spirit and form would both be destroyed, and he would utterly vanish from the world.
The divine thought of a martial artist resides within the head, and it can be said that as long as their cultivation is slightly profound, even if everything below the head turns into mincemeat, as long as the head is intact, the divine thought will not perish. If the divine thought persists, a powerful individual can help rebuild their body; thus, they could still survive.