What If Highly Intelligent AI Attacks Humans?

War always comes unexpectedly. At first, it was just a small fight between the two countries, but it inadvertently became a spark on the fuse - almost in the blink of an eye, the detonated war ravaged the whole world, and spread to our country. Due to the large number of highly intelligent AI weapons "Blue Sky" being used in wars, our civilization has suffered unprecedented damage. Major cities quickly turned into tombs, their population dropped sharply, and every ten houses were empty. The whole world was filled with a strong smell of death. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.