Chen Fei was filled with surprise. He had not expected the cauldron ear's function to actually be creating Rule Crystals.
If it could create Rule Crystals, then after Chen Fei broke through to the seventh tier, its value might be relatively low to him, but to the Yuan Chen Sword Sect, and to the entire human race, that value would be enormous.
Chen Fei carefully looked at the embryonic Rule Crystal inside the cauldron. A moment later, his brows furrowed slightly. It seemed he had been a little too optimistic.
This cauldron ear was indeed absorbing Heaven and Earth Essence Qi and then creating Rule Crystals, but its speed was outrageously slow.
Perhaps the complete Bronze Cauldron back then could create Rule Crystals extremely quickly. After all, it had been an eighth-tier supreme treasure. But now, broken until only a single cauldron ear remained, both its functions and its abilities had dropped by a huge margin.
To say not even one part in ten remained might even be overestimating it.
Chen Fei roughly estimated the condensation speed of the Rule Crystal within the cauldron. If he did not interfere, after continuing like this for over a hundred years, it should more or less be able to produce one Rule Crystal.
For a sixth-tier race like the human race, automatically obtaining one Rule Crystal after a hundred-plus years was definitely something they would be very willing to accept.
If it continued for several thousand years, that would still be dozens of Rule Crystals, an enormous fortune.
But for Chen Fei, obtaining one Rule Crystal after more than a hundred years was slower than even his ordinary cultivation speed. Why would he still need the cauldron ear to create Rule Crystals?
Chen Fei tried throwing ten thousand Low-Grade Essence Crystals into the