Huanyu City.
Four years passed. Huanyu City, which had already been upgraded to the eighth tier, had undergone earth-shaking changes.
The Divine Forbidden Wall, five hundred meters tall and eighty kilometers long, guarded Huanyu's Inner City like a towering mountain range.
Skyscrapers stood in orderly rows, forming Huanyu City's thirty-six urban districts.
After being modified by the Heavenly Evolution Hall and the Magic Pattern Research Institute, countless Cores of Blazing Sun had been fixed in the sky above Huanyu City.
Under normal circumstances, these Cores of Blazing Sun mainly supplied light and heat to various parts of the city, maintaining a comfortable and stable living environment.
Once wartime arrived, however, these Cores of Blazing Sun would become terrifying offensive and defensive fortifications.
A single Core of Blazing Sun could already display the effects of Legendary Grade Equipment.
When activated together as a whole, their offensive power and defensive strength were no weaker than those of conventional Mythic Grade Equipment.
This was in addition to the Blood Crystals and White Crystals that Huanyu Territory had accumulated over the years.
Even if a Ninth Tier Immortal came in person, it would be difficult to shake Huanyu City in the short term.
But if one had to name Huanyu City's greatest change, it would be the magnificent structure that spiraled upward, formed from numerous floating islands.
Although Huanyu City had already been upgraded to the eighth tier and possessed a Fire Seed coverage area of more than seventeen thousand square kilometers,
as the economic, political, and cultural center of Huanyu Kingdom, Huanyu City's permanent population had exceeded thirty million!
In addition, Huanyu City also contained enormous Special Buildings such as Dragon Valley, Titan Wasteland Mound, and the Hall of Heroes.
Even the Extraordinary Troop Buildings and Spellcaster Buildings belonging to the various legions