Xu Yi immediately took out the manual for the Thousand Illusions Heavy Thunder Sword that he had obtained from the cloaked man and studied it closely. The more he studied it, the more engrossed he became, and the more he realized that he might well have a chance to rebuild the Thousand Illusions Heavy Thunder Sword.
Compared to Wuchenzi, his current skill in weapon refining might be far inferior. But he had the Four-Colored Seal, which let him train over and over. Given enough time, he would surely succeed.
After studying for several hours, Xu Yi had memorized the secret method for refining the Thousand Illusions Heavy Thunder Sword. He took out the Four-Colored Seal, activated the light gate, and leaped inside.
This time, Xu Yi had entered Four-Colored Seal Space to break down his various communication talismans and extract their Incense Spirit Essence.
After killing Wang Bodang and the others, he had obtained quite a few communication talismans. Each contained more or less Incense Spirit Essence. That essence was useless to other people, but it was a great tonic for him.
Using Four-Colored Seal Space, he extracted the Incense Spirit Essence, stripped away its original attributes, then branded the attribute-free essence with his own Incense Spirit Essence. Once branded, it would be his to use.
However, branding the attribute-free essence with his own was not like infecting it with a virus. It was more like dissolving sugar in water. If he did not have enough of his own Incense Spirit Essence, he could not brand a large amount of attribute-free essence.
Although Xu Yi was now collecting Incense Spirit Essence by obtaining communication talismans from both the Golden Roc Demon King's Mansion and the Yin Court, he had only been at it for a short time and had not