After Little Saber made some modifications to the formation, he pried the net out with a few crisp snaps. It would have been difficult to do from the outside, but someone inside could easily pry it loose. Even I could dismantle it effortlessly, since I was an expert in formations myself.
After removing the net, I quickly began climbing upstream along the waterway's horizontal bend. Before long, I had entered the main channel of the underground river. The current had grown quite swift, which showed that the source was probably still far away. But since I had already come down here, I steeled myself and began swimming.
Along the way, I encountered quite a few small fish swimming swiftly downstream, but I had yet to see any vicious beasts. After all, these were only stray little fish passing through. To fill their bellies, they still had to reach quiet stretches of water. That was also the law by which living creatures followed the Heavenly Dao.
This underground river was far from narrow, with perhaps dozens of square meters of space. What exactly lay on the rock walls was truly impossible to know. I also tried swimming up to the surface, but perhaps because the current was so violent, no surface had appeared for the time being. Even if there was one, it only offered a tiny sliver of air.
But after catching my breath, I could swim farther.
However, after swimming three or four kilometers in fits and starts, I discovered that small holes resembling spring outlets occasionally appeared. These little holes led to various regions, and the discovery immediately shocked me.
This meant that the area nearby held more than just the mad old man's cave abode. These small holes were likely spring outlets from other cave abodes, which