The Yellow Springs Pass Defense Line was a level-6 defense line.
Under normal circumstances, that was enough.
After all, according to the Eternal Night Hall's projections, the Yellow Springs Pass Defense Line was an inland defense line. Its main purpose was to stop the strange tide flooding onto Western Wasteland Island after the island fell.
The Level-7 Defense Line was a threshold.
Once a defense line reached level 7, every upgrade to each section of wall required a Monkey-Head Fruit or another exotic treasure among the heavenly materials and earthly treasures. That was no small expense. Under normal circumstances, level 6 was enough.
But last time, it had failed to stop the strange tide that slipped through and attacked from the hinterland.
There was nothing to be done about that.
They couldn't possibly turn every defense line into a tenth-level defense line just to handle unexpected situations. The Eternal Night Hall didn't have that kind of capability. Yet in just a few moments—
They watched a Level-7 Defense Line rise out of nowhere in front of them, built by the Mortal Domain.
Every defender on the Yellow Springs Pass Defense Line, along with the builders stationed there, climbed onto the walls and stared blankly at the sight before them. It was a profound shock.
An utterly overwhelming display.
By now, Chen Fan was getting carried away with the upgrades.
He stood atop the wall as Eerie Stones liquefied and rushed through the copper pipes into it, while the Monkey-Head Fruits delivered by high-speed rail melted one after another and flowed into the wall.
The Mortal Domain Yellow Springs Mouth Defense Line upgraded again!
Level 8!
Level 9!
Level 10!
In the blink of an eye—
After consuming 2.58 billion Eerie Stones and 243,000 Monkey-Head Fruits, the 27-kilometer-long Mortal Domain Yellow