The inside of the giant tree hollow was filled with black sludge, like a swamp—one with highly corrosive properties.
It proved that sheer combat power could leave one helpless in many situations. In this case, if Su Xiao had not been accomplished in Alchemy, he would have been stopped outside the giant tree hollow.
Su Xiao sank through the black sludge. It was an unpleasant feeling. As he descended, the pressure and restraint from every direction grew stronger. Fortunately, the giant tree hollow was nearly vertical, so he only needed to keep falling.
After sinking through the black sludge for around five minutes, Su Xiao suddenly felt empty space beneath his feet. His body emerged from beneath the sludge and began free-falling. It seemed the black sludge had only sealed the upper section of the giant tree hollow.
While falling, Su Xiao grabbed a tree root and used the glowing rocks embedded in the surrounding earth to observe the situation below.
The densely intertwined roots below had been cleared away, though half a thick root nearly two meters in diameter remained above.
A crystal arrow spear formed in Su Xiao's hand. He swung his left hand, clad in the Black King's Armguard, and drove the spear into the root above. A Spirit Shadow Thread connected to it.
Su Xiao gripped the slender yet resilient Spirit Shadow Thread with his left hand and descended rapidly. The Spirit Shadow Thread was not only useful for stitching wounds. As long as Su Xiao had sufficient Blue Steel Shadow energy within him, he could form an extremely long thread.
After descending rapidly for a long while, Su Xiao returned to the bottom of the giant tree hollow. The metal door he had kicked a hole through appeared ahead.
Su Xiao entered through the hole