I Was Transported To A Raft Survival Game, But Spending On Waifus Gives Me 10,000x Returns!

What the story is about

Transported into a raft-based survival world, Ning Fan gains a return-multiplier system that greatly amplifies the rewards from items he builds for the women he binds as targets. He uses his growing supply of resources and powerful equipment to expand his territory, recruit allies, build an army, and prepare for escalating threats from pirates and native factions.