Onmyoji are somewhat similar to Huaxia's magicians. In the olden days of Japan, they were capable of divination, rituals, and sacrifices, though whether their arts were genuine is no longer verifiable.
The Purple-clothed girl, as if performing a magic trick, took out a talisman. With a toss, the talisman flew into the air. Then she shaped various hand signs with her fingers and chanted a series of spells.
"...Earth God's Amnesty, activate!" As the chanting concluded, the talisman burst into flames.
At about a person's height off the ground, the air seemed to ignite as well, creating a circular hole three meters in diameter, surrounded by ripples as if on water.
Looking through the hole, Thunder Wolf and his companions saw a miraculous sight; for the scene within was no longer the bare hillside but dimly discernible ancient buildings, buildings of Japanese style.
"What is this? A mirage?" Thunder Wolf asked in amazement.