1. Abnormality

That is, there are dangerous items with various incomprehensible and strange characteristics. Their existence seems to violate the laws of nature. They often have powerful or strange powers. Once they get out of control, they will cause unpredictable and dangerous consequences. Some humans use the power of "abnormality" to fight against threats in nature, but they also have to bear the dangers brought by the activation of "abnormality".

2. Vision

"Anomalies" are abnormal things on a larger scale, forming specific regions or even specific natural phenomena. They exist almost permanently in specific areas, like natural landmarks. After the great annihilation, large and small anomalies blocked the ocean routes, and the survivors paid a huge price to explore the laws of these anomalies and find ways to survive safely in the cracks between them.

(III) Number

Numbering standard: There is some uncertainty in the numbering of anomalies and phenomena, and it is not always possible to make a clear comparison of the strengths and weaknesses between different anomalies and phenomena. But in general, the anomalies and phenomena ranked higher are usually more dangerous, or have more bizarre and difficult to control "characteristics", or they have caused astonishing damage or contributed to special historical events, and thus firmly occupy unique high-level numbers in a way that leaves a name in history.