四期三期内必开一期什么意思

简介：The Twelve Cities were developed when the latest formation was developed a hundred years ago. This formation is called the Twelve-Star Killing Formation based on the Nine Stars Continuum and the three-star external introduction. Once it is opened, it will inevitably be transformed. The weather and other places outside are filled with thunder, the environment changes, and the plague is bound to be rampant, which is very terrible.