"A civilization can only withstand a limited number of War Stars, and with such massive volume, the number of machines might reach hundreds of billions, requiring a significant number of engineering personnel to maintain every aspect.
Conventional civilizations usually do not endlessly expand their population; therefore, they won't develop an unlimited number of War Stars.
In summary, after so many years, finally, a civilization is willing to sell their surplus planets, which is surely a good thing. However, since their asking price is rather high, both sides are still haggling over it.
Zhang Yuan exhaled a heavy breath and flipped through the information in his hands; this planet is about the size of the Moon, with a density of approximately 8.2 tons per cubic meter. This density is slightly greater than that of iron, which means it's essentially a huge metallic lump.
