[Knowledge] The Atrocities of Shen Merchant Guild III

Summary Given the abundant presence of Black Stone NPC Knowledge Item in the region,
signs of the Black Stone poisoning frequently emerge.
When individuals begin showing debilitating symptoms,
they often turn to a medication marketed by the guild, which is said to offer some relief.
However, a single dose isn't enough for a complete cure.
Consequently, many find themselves compelled to sign lifelong contracts with the guild

Quest Text There's a group of people poisoned by the Black Stone NPC Knowledge Item.