According to the rules, if an invasion of an Otherworld with a clear danger level was to occur, several national-level cities would form teams and launch an invasion at the same time.
This kind of foreign world was full of danger, but the rewards were also extremely good. It was the target of all the towers!
However, in order to ensure the success rate of the invasion, the buildings selected to participate in the invasion were all those with extremely high potential value.
Before the appearance of the Holy Dragon City, the abyss prison tower had always maintained a very high potential value in the same zone due to some special reasons. Therefore, it often participated in this kind of mission with rich rewards.
However, once the Holy Dragon City was promoted to a national-level city and had an extremely high potential value, the black prison tower would definitely be affected. The Holy Dragon City might even take away the original quota.
