In the air, the 33 flying ships were divided into three groups. Coupled with the Great Five Elements Sword Formation of Shu Mountain, they were still continuously launching joint attacks to expend the energy of the Hundred Tempering Mountain's array formation.
More than 300 cultivators who specialized in Feng Shui array formations had already spread out. They were circling the outer area of the Hundred Tempering Mountain and doing calculations and deductions.
However, the speed was not satisfactory.
Generally speaking, if one wanted to map the Feng Shui earth vein of a mountain range, they would need a professional cultivator to walk through the mountain range bit by bit.
Moreover, a hundred miles around the Hundred Tempering Mountain, there was thick volcanic ash everywhere.
This greatly increased the difficulty of finding the earth vein, so they had to search for it outside the range of the volcanic ash.