"Creak—"

Staring silently at the tightly closed iron door for a moment, Du Fei lightly brushed his sleeve. Subsequently, the once sealed iron door slowly pushed open. Witnessing this, Du Fei took a deep breath without much hesitation, and stepped directly in.

Beyond the iron door was another long passageway, stretching upwards, indicating that following this path would take him deeper towards the top of the tower. After walking along the long corridor for ...