I Started on a 4m² Sand Island, Fished Up a Mermaid, and Monopolized Global Trade With Half a Bottle

What the story is about

After a bus accident transports him to a deadly island-survival world, Lu Wei starts with only a tiny patch of sand and a system talent called Lucky Crit that can multiply or upgrade items he obtains. Using his fishing skills, clever trading, and a mermaid companion, he expands his territory and prepares for the dangers ahead.