The bronze doors were simply too heavy. With the City Lord Seal's power, Zhao Fu would be able to easily move a massive boulder that weighed many tonnes. He had never expected opening this bronze door to be so difficult.
Zhao Fu had no choice but to erupt out with all of his City Lord Seal's power. Within Zhao Fu's body, the Great Qin Seal clanged, giving off a large amount of black light that seeped out of Zhao Fu's body as a terrifying power burst forth from his body.
With this power, Zhao Fu placed his hands against the bronze doors and gritted his teeth as he pushed forward with all of his might. The bronze door slowly moved, giving off a low rumbling as it finally opened a sliver.
Immediately, a gust of incredibly cold air rushed out. This cold air caused the bodies of everyone to freeze, making them feel as if they had fallen into an icy cavern. They felt incredibly nervous and continuously sweated, instinctively feeling a sense of danger.