In the Outer Sect of the Moon Radiance Sect, a regular challenge letter only requires the seal of an Outer Sect Elder, or the seals of two Outer Sect stewards, to take effect.
Only a Life-and-Death Duel Letter requires the seals of two Outer Sect Elders to be valid.
Sail Fenning sought out two Outer Sect Elders, one after another, to press their seals onto the challenge letter. From this, the content of the letter was easily deducible—it was undoubtedly a Life-and-Death Duel Letter!
"I've never heard of Senior Brother Fenning and Senior Brother Barnes having any enmity… This Life-and-Death Duel Letter is far too sudden!"
"Maybe there's some hidden grudge between the two that we don't know about. Otherwise, why would Senior Brother Fenning challenge someone who just joined the sect and barely knows him to a duel to the death?"
"That must be it."
…