Wei Dynasty, Dingzhou; Dragon Geese Marsh.
A few days ago, Zhang Yan and Luo Xiao infiltrated this area by following a river channel known as Rong River. Zhang Yan's mortal Inner Qi had fully transformed into Innate Essence, allowing him to hold his breath for days and nights without difficulty. They moved forward in the darkness along the lakebed, solely to avoid detection by the patrolling disciples of the Mingcang Sect overhead.
Fortunately, their meticulous caution ensured their safety, coupled with the fact that the direction they traveled was not a priority for the Mingcang Sect's disciples, enabling them to reach a concealed waterway on the outskirts of Dragon Geese Marsh.
This waterway was surrounded by mountains on three sides. Whether traversed by land or flown across the sky, any movement would surely catch the attention of the disciples guarding the area.