Xu Ping'an was not aware of the purpose behind the Immortal Emperor's visit, and even if he had known, there wasn't much he could do.
At the moment, he was attempting to use the power of the Immortal Elemental to perform the Polar Hammering Technique, integrating this hammer technique into his sword moves.
To achieve this, he needed to split the power of the Immortal Elemental into two parts and then, with strong control, cause both parts to explode before finally combining them.
As for the power of Dao Principles, that was an additional force.
An attack above the Tenth Rank was divided into two parts: one was the strength of one's own Immortal Elemental, and the second was the enhancement of Dao Principles' power.
Generally, the power of Dao Principles was an enhancement to one's own strength.
For instance, a Dao Principle with a width and length of one hundred meters could double one's attack strength.