WAR, Weapons Degrade Within Seven Hours

In 1272 of the Old Era, a sudden rusty wind destroyed all human weapons. Everything that could be used as a weapon in the human concept would fall apart in no more than 7 hours as long as it was close to the rusty wind. The empire that had ruled the continent for a long time suddenly collapsed and was divided into fragments, turning into the seven kingdoms today. Times have changed, things have changed and people have changed. An aggressive princess from the Kingdom of Zhuang quietly opened the curtain of an era...