And because of the relationship between the Gu Immortal Sect and the Yan Shen Empire, they did not set up a Gu formation in the capital of the Yan Shen Empire.
Thus, if they wanted to return to the Gu Immortal Sect, they had to use the teleportation Gu formation set up by the Yan Shen Empire.
According to Li Tongzhou and Gu Tianqing's introduction, the Yan Shen Empire's large scale teleportation Gu formation was called the Thousand Mile Wolf Smoke Gu formation. It was a teleportation Gu formation specially developed by the Yan Shen Empire's Royal Gu Formation Group.
It could be said that within the entire Yan Shen Empire, this was the Gu formation with the least consumption and the widest range of teleportation. The Gu formation itself could transport the Gu masters with the highest strength.