Minutes passed and with the help of Caizher's tactics, he successfully killed more than a hundred Emperors. Because of that, these Emperor starts having a sense of crisis
One must know that the more than a hundred people that died are all Emperors! Those people spent years and years of their life to reach that rank. Those are people that were once the unrivaled geniuses of their time
They are not just some random grass that you can easily pick everywhere! Every Emperor are hard to kill as you need to completely destroy their bodies! If even just a single drop of blood remained, the Emperor would still be able to return back at their normal state. It was extremely hard to kill an Emperor!
Not to mention, the lesser the number of Emperors becomes, the easier it becomes for Caizher to kill them. Before, they think that teaming up to kill Caizher was unnecessary. However, they now felt that their numbers are low, too low to kill Caizher