Though Huang Helou and Gu Tianlao harbored countless doubts, they still followed Lu Feng's instructions and took up positions on either side at the rear of the courtyard.
Immaculate Spirit-Storage Jade, Illusory Chaos Ice Crystal, Solidify Spirit Jade, Stabilizing Crystal Stone...
All manner of formation materials floated one by one around Lu Feng. Had anyone familiar with them been present, they would certainly have recognized these materials.
They were precisely the same old set used during the suppression of the Battle Realm upheaval at the Eastern Origin Spirit Prison. Other than the Shock Spirit Stone, which was only needed in conjunction with the Jade Sound Array, there were hardly any changes.
It was only that the patterns Lu Feng now inscribed upon the various jade stones and crystal blocks, as well as his method of engraving and integrating the formation, were no longer the former "Ten Thousand Rivers Converge to the Sea," but had changed to "Hundred Rivers Return to the Sea."
Although the Ten Thousand Rivers Converge to the Sea technique could, to a certain extent, better control spiritual qi and manipulate a greater quantity of it, it was far too complicated to execute. The time spent engraving and laying the formation was also exceedingly drawn out, making it plainly unsuitable for the present situation.
Though Hundred Rivers Return to the Sea was vastly inferior to the former in its control over the diversion of spiritual qi, the difference lay only in the "thickness" of the amount of spiritual qi manipulated each time. It did not conflict much with the goal at hand.
Qian Meng stood in the distance, watching Lu Feng before the courtyard manipulate the Sui Xin Brush with a lift of his hand. His eyes were full of admiration. Seeing Lu Feng move between the jade