The key to cultivating the Great Sumeru Hammer lay in physical constitution—or rather, Soul Bones.
Soul Bones could not only strengthen one's skeleton, but the vitality and blood energy they carried could also enhance one's physical constitution.
The Great Sumeru Hammer's secret technique, Ring Detonation, placed extremely high demands on the body. If one failed to meet those requirements, they would inevitably suffer backlash.
It could be called a divine skill that wounded the enemy by a thousand while injuring oneself by eight hundred.
Ten-thousand-year Soul Bones were somewhat lacking; ideally, one needed a full set of Hundred Thousand Year Soul Bones.
Grandfather possessed several Hundred Thousand Year Soul Bones. One was the matching Soul Bone of his ninth Soul Ring, while the others had been passed down by their predecessors.
It was precisely because of this that Grandfather could perfectly wield the Great Sumeru Hammer and the Ring Detonation Secret Technique, suppress Qian Daoliu, and make the Clear Sky Sect the number one sect in the world.
Compared to him, Tang Hao was far inferior. Although his Soul Bones filled every slot, not a single one had reached the hundred-thousand-year level.
This made using the Ring Detonation Secret Technique extremely difficult, especially with the 100,000-year Soul Ring produced by Ah Yin's sacrifice.
Back when he fought Qian Xunji and the others, the main reason for his injuries was that he could not withstand the impact of detonating the 100,000-year Soul Ring.
He had originally placed his hopes on his son, and Ah Yin's Soul Bone had also been reserved for Little San. Yet it had been stolen, and even Ah Yin had met with disaster.
Now that the Blue Silver King Ah Yin had spoken of was gone, Little San's Blue Silver Emperor Martial Soul could not fully awaken.