From Idler to Tech Tycoon: Earth - Chapter 18: Old Connections

Su Lin travels to a post-apocalyptic world governed by rules where he spends his days scavenging for supplies and his nights defending against monsters. The only way to survive is to build his own safe house and engage in tower defense survival.The original host's parents passed away, the defense of his residence reset to zero, and he faced despair and neglect. His fiancée was almost assigned away. Faced with this predicament, Su Lin gains the opportunity to enhance his abilities once a week through select traits.[King of the Garbage Can: Increases the probability of collecting low-level garbage items tenfold and enhances the power and effect of tools and buildings created using these items tenfold.][Glazed Cannon: The durability of your crafted weapon mechanisms is 80%, but receives a 40% damage increase.][White Take: Copy one item or building from a companion's hands every month.][One Hundred Push-Ups: Upon completing one hundred push-ups daily, you receive a 35% damage reduction for the day.][This is Hextech! Not cheating!: Consume any item, and for every ten items consumed, three are returned.]

Catastrophe erupted, it was the end of the world.

Survivors were surrounded by the impregnable wall, a new order was established…

The desire for power, faith, and darkness pervaded each other, layer upon layer of brands imprinted in every corner of the heart.

The virus wreaked havoc, were these humans’ true colors?

“I unexpectedly survive, I want to live.” –Du Dian

An invasion like no other.
Dragons destroying everything in sight.
A new world rising from the ashes.

Blake lived through it all before he died, but now he was back, back to the time before things had ever happened.

A strange place with a strange girl....

Blake had no idea how it happened, but he suddenly had one of the enemies of mankind, a dragon girl, as his girlfriend.

--Extra Info--
Yuri tag is for his wives. Everyone in the harem will love each other.

Extra tag: NO NTR

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Chu He transmigrated into a barren world as a lowly odd-jobber in the Xia clan. He had initially accepted his fate and was ready to spend his life ordinarily and peacefully. Little did he expect himself to suddenly awaken the Checkpoint System which rewarded him for checking into places!

Ding, congratulations to the Host for successful checking-in. For your first check-in, your reward is the Golden Nine Turns. Ding, congratulations to the Host for successful checking-in. For your twenty-one-thousandth check-in, your reward is the Golden Manifestation of Buddha’s Form.

Chu He was certain that the world outside was too dangerous, so he resolved to not leave the book depository until he became truly invincible and peerless, and thus he stayed for a hundred years. A hundred years later, the Tiger clan attacked the Xia clan and planned to massacre countless humans, it was at that moment that Chu He finally showed his hand!