Xu Qing rested for a night at the Sea Sand Madam's villa, then took a boat to the Sea Sand Gang Headquarters. This place is an island, its area much larger than the Sea Sand Madam's villa, heavily guarded.
Xu Qing brought only one maid, Su Lianqing, and ascended the island with Sea Sand Madam leading the way. The layout before them was a natural grand Array, although not as mysteriously infinite as the one on Dragon Tiger Mountain, it was far from simple.
From a distance, the island's architecture was picturesque, with corridors winding and eaves towering; all positioned to take advantage of the terrain, intertwining intricately.
Take a wrong step and one might lose direction, needing a guide to find the way out.
Xu Qing already knew from Sea Sand Madam that her father had once enlisted extraordinary talents to create this Qi Men Formation on the island, its origins traceable even to Marquis's Eight Formation Map.