The first thing was that there were two worlds besides their human world that had been devoured; it was not just their world that had been devoured.
The Heaven Awaken World was boundless and continuously devoured worlds, expanding its area. The devoured world would appear at the edges of the Heaven Awaken World, causing the Heaven Awaken World to become larger and larger.
Compared to the Heaven Awaken World, the worlds that it devoured seemed quite small and only added a bit to it.
As such, every century, the Heaven Awaken World would devour many worlds, expanding into many areas. Zhao Fu did not know just how many worlds had been devoured this time, but he heard some rumors as to two worlds besides the human world.
One was most likely a Water Race world, as 80% of its regions were covered by water. There was a high likelihood for people of the Water Race to appear in such places.