"In this world, there is no clear distinction between good and evil. If you kill, you are a sinner, but this is a world where the strong prey on the weak. As long as you are powerful, even if you are a sinner, no one dares to speak against you. There is one way to prove if someone is from Ten Thousand Bloods Valley, and perhaps I am the only one aware of this secret," the old woman said.
"What exactly is the secret?" the Carefree Palace Master asked immediately, knowing that such a secretive sect must have unusual characteristics.
"The people of Ten Thousand Bloods Valley have lived in that environment for so long that their blood has mutated. On a full moon night, their blood turns from red to green. If you notice the appearance of green blood, then that person is from Ten Thousand Bloods Valley," the old woman explained.
