Sea Survival: Raft to Mobile Empire

I turned Doomsday Ocean into a deep-sea construction simulator. When I opened my eyes, the whole world turned into a room with a sea view, and I only had three broken wooden boards to bind the system. Looking at my peers on the channel crying for their fathers and mothers, I silently took out my past life memories: On the first day, the liver produces fire and distilled water. In the first week, bone bows and bone spears are armed to the teeth. In the first month, tame thunder eels to generate electricity and use giant crab carapace as armor. When the unspeakable master of the deep sea awakens and demands that civilization undergo the final test—— I pointed at the majestic biochemical giant ship behind me, the floating island city-states covering the sea, and the "Tianqing" rail gun with its muzzle pointed at the abyss. "Trial? Yes. But please do it according to my civilized standards." (Rebirth map + hard core survival + deep sea giant construction)