Global Drowning: the Rise of the Delivery Boy

Global sea levels rose by more than 500 meters in 72 hours. No warning, no reason. Seawater seemed to gush out of thin air, swallowing 96% of the land and reducing the population of 8 billion to less than 1.5 Billion. The city sank to the bottom of the sea, civilization was reduced to ruins, and the survivors could only survive on the floating wreckage on the sea. Delivery rider Lu Yuan narrowly escaped death holding a broken iron plank during the flood. When he woke up, he was floating alone in the vast sea, with only a board that could fall apart at any time, and a group of mutant fish that had grown in size and were full of fangs. Just when he was about to despair, something called the "All Things Upgrade System" bound him. The system has only one function: upgrade. Any item can be strengthened step by step - but even he himself doesn't know what it will become after each upgrade. He sneaked into the sunken city to search for supplies, discovered treasures that surpassed human technology in the underwater ruins, confronted the terrifying deep-sea behemoths, and fought his way through the game between the major forces. He met the cold-faced military doctor Shen Yueling, the old fisherman Ma Jianguo, the oceanographic scholar Lin Ruoxi, and the mysterious girl Su Qing - each companion has his own secrets and power. He also faced greedy plunderers, the ambitious warlord Zhou Hai, the "sons of the abyss" who worshiped deep-sea monsters, and the ultimate terror from an unknown dimension. This is a story of counterattack from the bottom of society. It doesn't rely on talent or background, it relies on a stubbornness that refuses to admit defeat, and the unknown surprise every time you upgrade. The world has sunk. But those who are alive must continue to live.