The Astral River was wide, and it also stretched up and down as far as one could see, dividing the universe in two.

At this moment, Lu Yin had seen an indescribably terrifying amount of rune lines flash past within the Astral River. Those rune lines had caused his entire body to tremble with fear, and his scalp had gone numb. Although he had not seen anything clearly, he was certain of how terrifying the owner of those rune lines was, as they were in no way inferior to what he had seen from Ancestor Tong or Ancestor Sightless. In other words, a strange creature within the Astral River had just swam by them that was powerful enough to rival a Cosmic Imprinter. 

Nobody knew how the Astral River had been formed, but it split the entire universe, or rather the entire Fifth Mainland, to form the Innerverse and the Outerverse. There were also its tributaries that flowed throughout the Innerverse, sectioning it into countless flowzones, but all of these tributaries were connected to the Astral River. 

Every year, countless people explored the Astral River, and every year, countless people also ended up dying within it. 

The simplest example was fishing from an Astral River Ark. One had to be a Cruiser at the bare minimum to even qualify to participate, and that was just the most basic qualification. 

If even fishing in the Astral River was so dangerous, then one could just imagine how terrifying the Astral River itself was. 

Nobody knew what lived within the Astral River, and it was possible that only Progenitors were able to clearly explore its depths. 

At this moment, Lu Yin...