Accumulated Thunder Nine Mountains was one of the few locations in the Jade Cauldron Domain with large-scale fourth-order mineral veins.
The environment here was unique, enduring heavenly lightning strikes all year round.
Over time, ores utterly unlike those found elsewhere were born within the mountains.
Soft Thunder Sand, a third-order mineral material needed for refining magic treasures, was produced here.
Besides Soft Thunder Sand, renowned third-order mineral materials such as Ink Lead and Flowing White Silver Tin could also be found here.
Low-order accompanying materials such as Quicksand Refined Gold, Lightning Struck Wood, and Crimson Thunder Iron were likewise produced in great quantities.
Among these materials,
the most famous and precious was undoubtedly Thunder Essence, a fourth-order mineral material of which only nine portions emerged every ten years.
This item was formed when vast amounts of lightning power accumulated and fused with special ores.
It inherently possessed the potential to grow.
It was the core material Golden Core Immortals used to refine Natal Magic Treasures!
Why could Thunder Essence never be absent when refining a Natal Magic Treasure? Ordinary artifact refiners did not know the reason.
But Duan Feng had once told Luo Chen that it might be related to the lightning tribulation Golden Core Cultivators had to undergo when advancing to the Nascent Soul realm.
Accumulated Thunder Nine Mountains steadily produced Thunder Essence and contained many rare mineral materials from the first to third orders, so this place naturally became incomparably important.
Ever since the Jade Cauldron Sword Sect conquered the Jade Cauldron Domain, Accumulated Thunder Nine Mountains had remained under its control.
Even though it lay far from the sect's territory, the Sword Sect would not permit any other sect to lay a finger on this place.
This time, Fallen Cloud Sect had stirred up war and chosen