Mu Chen was one of the Nine Kings, so it was his duty to lead the charge.
He commanded five thousand Jiu You Guards in an assault from the direction of the Thunder Fire Plain.
In just seven days, they swept three thousand li of territory, broke through seventeen great cities, and countless villages and stockades.
Like a sharp blade, they plunged deep into the soft underbelly of the giant known as the Hundred Battles Territory. Their advance was the fastest among the kings, unrivaled by any other army.
For a time, the various divisions were roused, and one after another pledged their service.
The army crossed the vast plains and surrounded a pitch-black mountain.
The surrounding mountain ranges held no lush green seas; only the thunderous din that filled the sky could be heard.
Rumble! Ancient thunder rolled up from beneath the earth, making the ground tremble incessantly.
It was called a mountain, yet it was a steep, fortified city built against the slopes.
The Thunder Demon Sect, a great power, had established itself there.
"King Mu, this is the Thunder Demon Sect."
"This division is fierce and belligerent. They often trespass on our territory and have a long record of infamy."
"Their sect master, Qin Tiangang, is at the late stage of Fifth Grade Supreme."
Qiu Shan, one of the Four Great Commanders of the Jiu You Guards, stepped forward to report.
The kings served as the vanguard. Jiu You, one of the Four Emperors, was naturally not among the army.
Mu Chen narrowed his eyes. He remembered this place.
It had a secret realm called the Thunder Demon Abyss, which held an immense quantity of thunderous power: Earth Demon Lightning.
Deep within the Thunder Sea, an even more powerful force lay hidden: Nether Heart Demon Lightning.
"What