Third Rank Thunderous Treasure Iron Ore Vein Ruins (3,000 Words, Please Subscribe)

Several days later.

A streak of lightning swiftly cut across the sky. Without alerting anyone, it entered the depths of Cloud Stepping Ridge within the White Cloud Mountain Range and descended outside Cloud Stepping Valley, home to a Third Rank Low Grade Thunder Vein.

Thundercloud True Person, Ling Pengyun, and Ling Penglin revealed themselves. A flying vessel rested beneath their feet.

"This Thunder Vein has a deep foundation. It has indeed reached the threshold of the Third Rank Middle Grade. Even without outside aid, it will likely enter the Third Rank Middle Grade within two or three hundred years."

After examining Cloud Stepping Valley before him and offering his assessment, Thundercloud True Person turned to Ling Penglin behind him with a faint smile.

"Peng Lin, you were the one who set up the Second Rank High Grade Thunder Gathering Vein Condensing Grand Array here, weren't you?"

"That is correct." Ling Penglin nodded.

More than a dozen, perhaps several dozen years ago, she had arranged the Thunder Gathering Vein Condensing Grand Array here under Ling Pengyun's direction.

This array could absorb thunder spiritual energy or refine thunder-attributed spirit objects, thereby strengthening the foundations of Thunder Veins and gradually raising their grade.

Over the years, the Third Rank Low Grade Thunder Vein here had refined a great number of thunder-attributed spirit objects gathered by the Ling Clan through this array. That was how it had reached its current level, standing at the threshold of a Third Rank Middle Grade Thunder Vein.

"The array you set up is quite good. However, there are slight flaws in the placement of your array flags and the other spirit objects used to form the array. If you place the array flag over there at..."

Seeing Ling Penglin's reply, Thundercloud True Person patiently gave her some instruction.