Xiang Yu carefully traced the intricate blueprints of the teleportation rune along the sword's surface. The delicate pattern required absolute perfection, and every stroke demanded his complete concentration.
This was proving to be monumentally more difficult than crafting talismans. No wonder those ancient practitioners had eventually abandoned runes in favor of the simplified talisman method. The complexity was staggering, and the margin for error practically nonexistent.
The first major challenge came from the sword itself. The pseudo-divine weapon's incredible durability made it nearly impossible to engrave anything onto its surface. Ordinary tools would have been completely useless against such a high-grade artifact. Fortunately, his Abyssal Void Flame proved capable of cutting through even this formidable material, allowing him to make the necessary marks.
