All along, what Lu Ping'an envied most was the "Heroic Spirit Warriors" in the Evolution World.
In the Underworld, the Divine brought their Heroic Spirit Army to ascend together... The former is quite normal, as God level beings continuously evolving often have their unique traits, but the latter, the undying nature granted to mortals, is too abnormal.
Although they obviously have the weakness of being "bound to the Deity," just the "Undying (Resurrection) nature" and "constantly being in their peak state from life" are too enticing.
And upon investigation, those Heroic Spirits can even borrow the Divine Power of their masters and possess part of the Deity's weakened traits to a certain extent, with quite a high strength limit.
From Lu Ping'an's perspective.....
"A biochemical warrior technology with a 100% conversion rate that can be used more broadly, with infinitely recyclable warriors and extremely low cost....."
Low cost, never dying, and with some growth potential.