The Forest of Countercurrent

T civilization. 500 Years ago, the population surged and the environment deteriorated. Experts predict: Civilization has reached a critical crossroads of life and death. Organizational plan: Send twenty interstellar fleets out of the T galaxy to find a way to rescue the trapped people. … 500 Years later, a fleet returned full of hope... However, the problem has been solved. Civilization no longer cares about this choice.