On the stage, the stern-faced Elder waved his hand, and shortly after, another elder brought four people of varying age and strength to the stage.
Out of the four, two had peak seal opening stage strength with 9 hidden seals opened while the other two opened 7 hidden seals.
"We found four volunteers whose strengths are as requested by the participants in the contest. We will now proceed with the testing process."
Gin knew about these so-called volunteers, the people who willingly come forward to test the effects of potions and other Alchemy products such as medicinal cream, antidots, and so on.
They aren't doing it for free, the alchemy association compensates them handsomely; Elemental stones, potions, cultivation technique, anything can be traded for being a guinea pig.
The downside is, should something happens to the volunteers the Alchemy association won't take the responsibility for their death.