The string of prayer beads in Yuyin's hand was left to her by her Master. The item recognized its owner and would protect her to the death.
If anyone tried to snatch the prayer beads away, they would shatter on their own, which was equivalent to being destroyed.
However, the Sacred Seal was different. It surpassed any Dharma Artifact in the world. As long as the Sacred Seal was properly hidden,
Chapter 160