Although it is extremely hard, ordinary attacks cannot cause much damage to the bead, and even if Mo Tian self-destructs, it is difficult to shatter this bead.
However, since this bead is a spiritual artifact, it can be bound by a blood contract.
Mo Tian had already used a blood contract on these two beads. If Mo Tian used these beads and infused spiritual power into them, they naturally would not shatter under the impact of self-detonation.
But if Mo Tian were to self-destruct, it would be impossible to infuse spiritual power into the beads.
Without the support of spiritual power, the defense of the beads would naturally be reduced. Under the self-destruction of a Void Refining Stage expert, even a top-grade spirit artifact would shatter, let alone the beads which are just high-grade spirit artifacts.
