Time flew by, and a year passed.
Jiang Ping'an headed to Black Yin Mountain once more.
By now, his Nine Nether Ghost King Soul Devouring Array contained four True Sword Spirits and one Ghost King, while the Mystic Nether Spirit Controlling Banner held twenty-nine Sword Envoy Spirits and thirty-three Ghost Generals. His strength was terrifyingly formidable.
Over the past year, he had purchased a Netherworld Ghost Stone, exchanged for the Rakshasa Hair from the treasure vault, combined them with a Nightmare Demon Core from his own reserves and a strand of Profound Firmament Sword Qi, and successfully promoted a Sword Envoy Spirit into a True Sword Spirit.
He had also exchanged for all twenty-four pieces of Mysterious Yin Bone Jade from the Mystic Weight Sect's treasure vault, promoting twenty-four Sword Wraiths into Sword Envoy Spirits.
Using the properties of Nether True Qi, Jiang Ping'an silently slipped into the outskirts of Black Yin Mountain's deepest region.
Just as last time, when Jiang Ping'an released all the Sword Envoy Spirits, Ghost Generals, Sword Wraiths, and Fierce Spirits from the Mystic Nether Spirit Controlling Banner, the surrounding Fierce Spirits and Ghost Generals immediately lunged at him on instinct.
In less than the time it took to drink half a cup of tea, the Fierce Spirits and Ghost Generals suffered a crushing rout and fled.
Surrounded and protected by ten thousand Sword Envoy Spirits (Ghost Generals) and Sword Wraiths (Fierce Spirits), Jiang Ping'an then entered the deepest region of Black Yin Mountain.
Along the way, Fierce Spirits and Ghost Generals continually attacked from the roadside, but the Sword Envoy Spirits (Ghost Generals) and Sword Wraiths (Fierce Spirits) around Jiang Ping'an easily defeated and even devoured them.
After advancing more than twenty li, Black Yin Mountain's three Ghost Kings finally appeared. They commanded seventy or