Zhongren's Discovery
On the Northern Frontier Melted Plains of Jing Nation, at the entrance of the Primordial Cave, Lin Lu stood with ten thousand Jing Nation soldiers, arranged in formation. Each of these soldiers had been carefully selected by Lin Lu; all were cultivators, though their cultivation levels were relatively low, none exceeding the King Stage.
Under normal circumstances, their strength would be insufficient to venture into the intensely hot Northern Frontier Melted Plains, let alone reach the entrance of the Primordial Cave. Their presence here was due to a formation in Lin Lu's possession, left to him by Gu Lan before departing for the Immortal Realm. This formation, known as the "Inverted Five Elements Formation," had a unique capability: it could autonomously convert the five elements.