Global Cataclysm: Ember of the Stars

In 2073 AD, humans over-exploited the "stardust mines" on the edge of the solar system, triggering a chain reaction. The sun suddenly entered an "abnormally active period" - a "super electromagnetic pulse (EMP)" erupted every 72 hours, and the earth's satellite network and power system were completely paralyzed. At the same time, the surface temperature soared by 15°C within 3 months, and the equatorial region became a "burning earth belt." The melting of polar glaciers caused sea levels to rise, and 70% of coastal cities sank. The remaining humans were forced to retreat to inland plateaus or underground bunkers.