Alien Defense

On the autumnal equinox of 2152 AD, cold rain soaked the entire Binhai Heavy Industry City. A black rift opened in the sky, high-dimensional information collapsed into a real insect wave, and the whole area descended simultaneously. Communications were paralyzed, radars were disabled, and defense lines collapsed one after another within half an hour. The daily life familiar to humans was completely shattered in a continuous green rain. What should ordinary people do in the apocalypse?