Apocalypse: The Hardcore Survival Path.

Summary

In a harsh environment, He Xiao faces a critical shortage of metal materials needed to upgrade their shelter's systems. With no options left, he explores the shelter for recyclable items, starting from the waste processing center. He discovers limited resources, including algae oxygenators, and calculates the algae needed for oxygen supply. He also improves water treatment systems using alien technology to purify contaminated water. However, he inadvertently dismantles the environmental control system, jeopardizing the agricultural zone. Realizing the mistake, he rushes back to create heaters to maintain the necessary conditions for plant growth.

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