MTL - The Experimental Log of the Crazy Lich - Chapter 721 Source of confusion

Paju, the city of hope, peace and madness.And the tale of a mage trapped in a bizarre world.“In his house at R’lyeh, dead Cthulhu waits dreaming.”

[Raising Babies + Sweet Romance]Su Xingwan wakes up inside an old-school CEO novel—as the “evil aunt” who starves and beats the three genius children left in her care.In the original plot, the kids’ uncle arrives, sees the abuse, and locks her away to die in a psychiatric ward.But Su just got here—and she’s read the whole book.Looking at the three bony, wide-eyed toddlers, she decides:“Plot twist—I’m fixing this.”• Eldest (Da Bao): a prodigy sold to a celebrity couple, future business titan.• Middle (Er Bao): bound to a villain system that keeps whispering, “Find Uncle—destroy the aunt!”• Youngest (Little Bao): mind-reader, destined to be the story’s adored koi heroine.Su sets out to undo every scar the original owner left.Little Bao blinks: “Why is Bad Aunt suddenly… nice?”Er Bao narrows his eyes: “Trap detected.”Da Bao clutches his siblings: “She’s brainwashing you!”When the formidable Uncle Lu Yun finally arrives, he expects a rescue mission. Instead, he finds three giggling kids curled in Su’s arms—and decides the children aren’t the only ones he wants to take home.

The end of the world is coming, the world has undergone great changes, and everything has changed. Plants, animals, and even insects, as long as there are living things, have mutated.
Become more powerful, and even evolved supernatural abilities, such as chickens and ducks that can fly to the sky, such as cats and dogs that can breathe fire.
But only humans, without any obvious changes, seem to have fallen from the top of the food chain to the bottom of the food chain overnight.
Any creature that can open its mouth to eat can treat humans as food.
But fortunately, this world has not completely killed humans. Gradually, humans discovered that they had the ability to cultivate compatibility with other creatures.
As long as it has a high degree of compatibility with some powerful mutant creatures, it can be used for its own use to achieve the purpose of protecting itself.
Fang He is a person who is very compatible with mutant animals, but it is also because of his ability that he has changed from the strongest to the stupidest.
Fang He, who was reborn, said, “Hmph, this time…”

- Description from novelbuddy

The apocalypse has descended. People are trapped indoors, driven to despair by severe supply shortages.Yet, Lin Lang has awakened the 10000x Rebate System. Any supplies consumed by his women will be returned to him ten-thousand-fold!!![Shen Chuchu consumed one piece of beef jerky. Refunded: 10,000 pieces][Ning Shuangyu consumed one Superpower Fruit. Refunded: 10,000 fruits]……An endless stream of refunded supplies! Physical enhancements that break past human limits!Right in the apocalypse, Lin Lang is finally living the blissful life of his dreams.If you were to ask him if he has any other wishes—“Actually, I have room to take in a few more goddesses.”