This Damned Thirst for Survival - Chapter 228: Real Men

Perhaps it is the choice of fate. As a senior otaku, Qian Lingfeng got the “steel shell system”. However, when he swept the world with the system, became a local rich man, made all kinds of beautiful women, opened a harem, and realized the ultimate fantasy of thousands of otaku, he found that things seemed far from simple!
When the end comes, biochemical zombies suddenly come down, fierce beasts are in power, bloodthirsty zerg roam to kill the world, and human lives are comparable to dirt. Where will weak human beings go in this world? Is humanity going to be extinct? Or … can an otaku save the fate of the human race?

- Description from Novelupdates

After transmigrating, Liu Changqing skipped over the dating phase and was thrust straight into fatherhood with a son and a daughter. This left him in a gloomy state. His eldest son is mature and intelligent, while his young daughter, resentful of her parents’ divorce, blames Liu Changqing for everything and treats him with hostility.The original owner of this body was the ultimate “simp.” He grovelled so much that his ex-mother-in-law’s single agreement allowed his ex-wife to take away all the family assets in exchange for custody of their two children.Now, with his factory bankrupt, Liu Changqing is racking his brain over how to raise his son and daughter. This has become his biggest headache.——————————————No reconciliation, no groveling, and firmly grounded values.

In this world, people are granted a power said to come from the heavens, a mighty weapon tied to the soul of humans. Those who receive these magical weapons fight against monsters to survive, driving the economy of this world.Lian is just an ordinary boy until his world is turned upside down when another race takes away what matters most to him: his family. From that moment, follow Lian's journey as he seeks the strength to avenge those who killed his family and uncovers the truth behind his power.

This is a story about the protagonist getting the system, going crazy in the biochemical apocalypse, producing aircraft and tanks, destroying zombies, saving good people and killing bad people.

- Description from novelbuddy