He only needed to be careful of one thing—the mysterious entity that had shattered the Death God Tree!
As for the concepts of life and death...
The quickest method was to seek out "Life's Red" and the Emperor of Hidden Corpses.
The third light ball was the one-third of the Shattered Twilight Sky that the Collector had severed, which now presented itself in a fragmented form, increasingly chaotic and unpredictable, thus fitting the concept of doomsday even more.
["Shattered Twilight Sky (Eight-Star Primary Material): Originating from the Mother of Twilight, who, through her own twilight and doomsday radiation, gave birth to a special ecological system forming the Twilight God Kingdom. It symbolizes the dusk and termination of all beings within the Mother River Realms, and through the gestation of the Palace of Twilight, it initiated ■■■■■, but suffered unknown mutations leading to the onset of chaos.