Ye Xun was once the sect's good-for-nothing. With damaged spiritual roots, he couldn't cultivate and was bullied relentlessly. When sect disciples killed him, he unexpectedly activated the Death-for-Life Exchange System and learned that only deliberate killings by others could earn him cultivation and let him be reborn. The stronger the killer, the greater the exchange multiplier.
From then on, Ye Xun abandoned conventional cultivation. He deliberately provoked powerful enemies and exposed his weaknesses, finding all sorts of ways to "get himself killed" to boost his cultivation. From inner-sect disciples to demonic cultivators and vicious beasts, then to prodigies from countless heavens and ancient gods, he was killed again and again, only to return at full strength and rocket through the realms every time.
In the early stages, he used the hands of the sect's enemies to break through, face-slapped those who had once bullied him, and left his beginner sect after exposing its conspiracy. In the middle stages, he roamed a world in chaos, using the pursuit of various factions to "farm lives," recruiting followers and winning the favor of beautiful women as he gradually became one of the continent's strongest. In the later stages, he broke through the barriers between planes and challenged the mighty figures of countless heavens, even confronting the Heavenly Dao's divine punishment head-on and using its killing power to reach the Reincarnation Realm.
Finally, when extraterrestrial demons invaded, Lin Chen deliberately let the Demonic Ancestor kill him, triggering the System's ultimate exchange. He fused the cultivation gained through countless deaths, became the Lord of Life and Death, put an end to the calamity, and took control of the cycle of life and death, fulfilling the legend of "defying the heavens through getting himself killed."