Ten thousand li west of Glazed City lay a region of rolling hills. Since a mid-sized demon tribe, the Leopard Demon Clan, had originally lived there, it was known as the Leopard Hills. West of the Leopard Hills stretched the vast plains inhabited by the Red Flame Lion Clan.
The Leopard Demon Clan had built a city in these hills—Leopard Demon City. It was a place where the small and mid-sized demon clans and wandering low-rank demon beasts throughout the tens of thousands of li of Leopard Hills frequently gathered and traded. Naturally, it was also a stronghold and foothold of the Demon Country in this region, with a True Spirit Altar built within it.
But now, the Leopard Hills and Leopard Demon City had become the Demon Country's second line of defense against the Immortal Dynasty's invasion. The Leopard Demon Clan and the many demon clans dwelling in the Leopard Hills had either been organized into garrison forces for the defensive line or had already fled.
Perhaps having learned from the failure of the first defensive line, the Glazed City Defense Line, the demon clans of the Demon Country no longer constructed just one line of defense in the Leopard Hills. Instead, relying on these ten thousand li of hills, they had built a full ten defensive lines, one behind another.
Basically, a defensive line had been established roughly every thousand li.
Moreover, these defensive lines no longer had only a single key node. A city was built every few hundred li, serving as a node of the defensive formation and extending its reach a thousand li forward, back, left, and right.
This way, the demon clans' second defensive line would no longer be like the first, where once Glazed City was taken by the Immortal Dynasty, they had