The Yin Luo Underground Palace was not particularly well hidden within the Yin Luo World.
The many living beings in the Yin Luo World also knew that an underground palace existed here. However, in the past hundred thousand years, not a single person had been able to enter it!
It was said that this had once been the place where an Ancient Celestial Venerable had passed away several hundred million years ago.
Time was the most powerful opponent. Even a Celestial Venerable's lifespan was not infinite. Unable to become a True God, their lifespans would be worn away and dissolved in the endless passage of time, until they entered the Five Signs of Decay of Devas and could only watch helplessly as they perished.
Thus, eternal life was also one of the ultimate pursuits of the martial path.
It was said that, shortly before his death, this Ancient Celestial Venerable had used extremely special means to establish a magnificent underground palace, leaving all his lifelong inheritances and insights within it.
Moreover, each time the entire underground palace opened, the time and method were different.
Throughout the endless ages, quite a few martial artists had entered the underground palace and obtained tremendous benefits within it.
In the past, Xun had once entered the underground palace by a fortuitous coincidence. That opening had already taken place a hundred thousand years ago.
Back then, Xun had obtained quite a few resources and benefits within the underground palace. Thus, after hearing that Ai Hu had obtained a way to enter the Yin Luo World, Xun had immediately made Luo Zheng agree. If Xun remembered correctly, the resources left behind in this underground palace should be of immense help to Luo Zheng.
Under Ai Hu's guidance, everyone crossed nearly half of Zeji City and soon