Yan Fei, who teetered on the edge of life and death, constantly thought about how he could survive, which is why he chose "Life Force" from countless attribute energies. "Life Force" might not be as flashy as some other abilities, but it was the most suitable for Yan Fei. That's because Yan Fei's combat didn't solely rely on his own physical strength, but more on drones and high-tech weapons.
In the past, Yan Fei's own combat power was weak and couldn't match that of his drones, so his physical body had become a drag on his Drone Avatar, preventing it from unleashing its fullest combat abilities. But now that Yan Fei had become a God-Level Expert, his own strength had been greatly enhanced, and his weakness was completely compensated for; no longer afraid of being targeted directly. This allowed Yan Fei's Drone Avatar to fight unrestrainedly, unleashing its strongest combat power.