This is how the pyramids were built.
Passive: Underground Housing costs 20% less gold.
金字塔便是以此法修築而成。
被動效果：建造地下居所消耗的黃金減少20%。
PRACTICAL REFERENCE
Acquisition and choice
- How to get it
- General or undisclosed poolStart with Mountains, Dens, and expeditions; if it stays missing, check late Treasure Hunter and Forge rolls.
- How to choose it
- Economy priorityStrong while Gold, Mithril, or resource throughput is the current bottleneck.
