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Five years ago, his ex-girlfriend became seriously ill. Han Hao exhausted his savings and took out loans. In the end, his ex-girlfriend was cured and married to a rich man, and he was forced to be sent to a mental hospital. Five years later, Han Hao returned strongly, treating diseases with one hand, punishing evil and promoting good with the other, demonstrating the style of a great doctor in a great country.

Duan Tianrui, a senior student, played "No. 1 In the World" until he finished the server! Five years of nearly single-player online games have made him the number one player in the entire game. All kinds of treasures, pets, and magic weapons are top-notch. Who would have known that on the day when the server was shut down, the game would reflect reality, and the male protagonist would become the real boss in the world!

Huge meteorites are coming, solar flares are erupting, zombies are frenzied, and catastrophes are coming. The global wasteland, insect plagues and mutations, the ice age, the ocean century, the coming of gray fog, the invasion of other worlds... Ye Han traveled to this world and was about to face the end of the world! Fortunately, he awakened the [Chosen System], which not only upgraded the shelter, but also gave him a hundredfold reward for completing the mission! Wooden door → All-steel door → Alloy door → Intelligent identification city gate... Crossbow → Crooked machine gun → Enhanced version of Gatling → Italian gun → High-energy laser cannon... Scientific research institute: drones, armored vehicles, tanks, aircraft, mechanical guards, satellite launch sites, nuclear Power energy... When everyone was still struggling to survive in the ruined city, Ye Han was already hunting around with an AK in hand and a Desert Eagle on his waist. When everyone was still struggling to support themselves under the siege of zombies, Ye Han was already leading a mechanical army to conquer the city!