Under Hou Sihai's watchful gaze, Su Shi'er's expression remained calm throughout.
When over half of the little True Yuan in his body had been consumed, and his divine sense had also reached nearly half the limit of his Sea of Consciousness, a cold glint flashed through Su Shi'er's eyes.
"Heaven's Will... Is Unpredictable!!"
His indifferent voice rang out, echoing through the cave. In an instant, the True Yuan and spiritual power in the air contracted, all of it pouring into Neither-Knife-Nor-Sword in the blink of an eye.
The flying sword spun rapidly through the air.
Countless sword lights filled the entire cave. The sword qi emanating from them carved conspicuous sword marks into the cave walls.
The sword lights raced crisscross through the air, splitting into eight streams of light that shot toward different points on the eight chains.
Every point was the weakest spot on the chains, deduced by Su Shi'er according to the principles of the Eight Trigrams.
"Clang, clang, clang..."
For a time, sparks flew throughout the cave like fireworks blossoming in full bloom.
The chains, imbued with the principles of the Eight Trigrams and connected to the great formation outside, naturally possessed astonishing defensive power.
Yet the move of the Heavenly Sword Art excelled at using a small amount of True Yuan to stir the Heaven and Earth Spiritual Qi in all directions, unleashing a startling offensive.
Its power was immense.
It placed demands on the True Yuan within the one wielding the technique, but those demands were not particularly great.
The key lay in the wielder's understanding of formations, of Heaven's Will Is Unpredictable, and in the strength of the wielder's divine sense.
If one's divine sense was insufficient, then even if one mobilized a tremendous attack, one would be unable to control it.
In