The newly erupted fifth Mysterious Bloodlight Grand Formation lay beneath Laiyang Fortress, at the border between the Northern War Zone and Central War Zone. It was not too far from Blood River Military City, where Ye Zhen was stationed.
The straight-line distance was roughly 1.6 million li.
The eruption of the Mysterious Bloodlight Grand Formation beneath Laiyang Fortress had a tremendous impact on Blood River Military City.
It could be said that the Devil Race army stationed within Laiyang Fortress's Bloodlight Aura could, under forced march conditions, reach the right flank of Blood River Military City in merely seven or eight days. Together with Demon Emperor Second Crown Prince Zhui Ri, who had long been confronting Blood River Military City, they could form an encirclement around it!
The Devil Race elites stationed within Laiyang Fortress's Bloodlight Aura would need no more than three days to charge toward Blood River Military City's right flank.
At that time, with Blood River Military City encircled from both sides, the likelihood of its fall would be extremely high.
Although Ye Zhen had already formed a judgment regarding the current possible strategy, before orders came down from the War Ministry and the Human-Demon Battlefield Grand Governor's Mansion, safeguarding Blood River Military City remained the foremost priority.
After all, even if the Human-Demon Battlefield garrison were to retreat on a massive scale and establish a second line of defense, it would take time.
Before the entire army withdrew, Blood River Military City absolutely could not fall. More importantly, the Mysterious Bloodlight Grand Formation beneath Blood River Military City could not be allowed to erupt.
Therefore, on the second day after the Mysterious Bloodlight Grand Formation beneath Laiyang Fortress erupted, Ye Zhen took the initiative to travel to Laiyang Fortress and investigate the situation.
Under the present