Gu Xi reached out and touched the Boundary Stone before him. For an instant, images of the Netherworld's first appearance and the birth of the Blood Sea seemed to flash before his eyes.
Then, a ding sounded in Gu Xi's ear.
You have discovered the Underworld Keystone. You may choose to read the information upon the keystone and master a Netherworld-level ability, or take the keystone away. Note: If you take this keystone away, you will cause abnormalities in parts of the Netherworld, eventually even drawing the Netherworld's hostility and pursuit.
After reading the information before him, Gu Xi stepped back several paces. Only then did he see the Boundary Stone's full appearance. Just the portion exposed aboveground covered an area of two meters by two meters.
If Gu Xi still had his abilities, he could have tried having someone transport this Boundary Stone back to the city.
But now, Gu Xi could only shake his head.
He placed his hand on the Boundary Stone and carefully studied the patterns on it.
Those patterns resembled writing and recorded certain information.
Gu Xi could barely make them out. The information mainly concerned wind, ocean waves, and seawater that corroded everything.
There was also some related information mixed in.
Wherever Gu Xi's finger passed, a faint glimmer of light flashed.
Gu Xi understood that as long as he drew out one of those streaks of light, he would immediately learn an ability.
As for what exactly a Netherworld-level skill was, he feared he would only understand after learning one.
However, after drawing out one ability, Gu Xi would no longer be able to learn the other skills on the Boundary Stone.
It was clear that the Boundary Stone before him used a rule-based method of learning. Each person could only