The Talisman Token Jin Chang Geng gave you was of exceptionally high quality. He had obtained it in the Great Void Realm, where he had also gained the Heavenly Sword Intent. There had originally been three of them, but he had unfortunately encountered a troublesome calamity in the Great Void Realm. To improve his chances of survival, he had no choice but to use one.
According to Jin Chang Geng, this Talisman Token could condense five Light and Shadow Flying Swords for its user. Each Light and Shadow Flying Sword possessed considerable power and could be used as a killing move against enemies. Its drawback was that each sword could only attack once; its consumable nature was maxed out. This was because its all-forward, unstoppable offensive force meant that, from the moment it was created, it had never been given instructions to turn back and conserve energy.
Jin Chang Geng had tested it. Every Light and Shadow Flying Sword was immensely powerful. He had fought many bitter battles alongside you and the Snow Emperor against others in the Mountain Sea Illusion Realm, so he used the Snow Emperor as the benchmark. If Jin Chang Geng himself used this Talisman Token, the one-time power unleashed by the Light and Shadow Flying Swords would be slightly stronger than the Snow Emperor's commonly used supernatural powers.
If you did not choose to use it in battle, however, Jin Chang Geng emphasized that you could use it for travel instead. In his opinion, the speed of all five Light and Shadow Flying Swords exerting their power together surpassed that of most Sixth Ring Flying Dao Artifacts.
He estimated their duration to be between three and ten years. Three years was because, after Jin Chang Geng escaped the calamity and left the Great Void Realm,