The Age of Wind Erosion

A cosmic storm originating at the center of the Milky Way sweeps across the solar system. Its energy fluctuations cause violent turbulence in Earth's atmosphere, and within 72 hours, surface wind speeds exceed 100 meters per second. Skyscrapers collapse like blocks. China activates a nationwide emergency response 48 hours in advance with its "Sky Dome Early Warning System," then uses the "Underground Great Wall Project" to orderly evacuate 90% of its population to deep underground cities. Other countries descend into chaos amid resource struggles and delayed policies: America's elite are evacuated first, sparking riots among the poor; a refugee crisis leads to border conflicts in Europe; and Africa is nearly paralyzed by its weak infrastructure. That's the backdrop. The story is still about mecha and sci-fi, just set in this kind of world.