But I think it makes sense to translate the national costume into the fission of the earth, because the wing of death, the cause of the whole catastrophe, is originally the guardian of the earth. He was corrupted crazy by the ancient gods. He betrayed Azeroth and wanted to destroy the whole world. His coming out of the mountain has caused a lot of nonsense to Azeroth's world. The rift valley in the barren land between the north and the south is one of them, but it does not include the fission of the whole earth.
In fact, The Fission of the Earth is only a different translation of the English original, so we don't need to delve into it. We only know that it is a national translation of the Cataclysm.