Lu Yin threw out a massive amount of star essence, and he watched as the needle-like weapon dropped down a minuscule amount each time. While the weapon was not as ridiculously difficult to upgrade as the slipper, it would still take around 100 billion star essence to Enhance it once. It was already able to shatter a Semi-Progenitor’s inner world, so after being improved, would it be able to threaten even Progenitors?

He was not certain, but he certainly wanted to try and find out.

Suddenly, Lu Yin remembered the slipper.

Regardless of whether the needle-like weapon could be Enhanced to match the power of the slipper, even the slipper had failed to fully break through the fog trapping Progenitor Smoke. Even if the needle-like weapon was improved, it would not be strengthened to the point where it could overcome the fog. This meant that it was essentially useless to Enhance it.

Lu Yin shook his head and put the weapon away. He checked his belongings again to see what else he had. The Withered Bark that held the power of time could be Enhanced, as could his Netherworld River, but upgrading either one of them would require about as much star essence as the needle-like weapon. There was also the metal that Lu Yin had collected from the Absolute Beast Cage that had originally belonged to the Fourth Mainland, and it had nearly destroyed the Mainland by devouring all life there.

Some time ago, Lu Yin had Enhanced the metal slightly, and that attempt had cost him almost six billion star...