It was just
That by adding these functions to the Middle-Grade Auxiliary Spiritual Device, it had reached the current limit of He Song's capabilities on the Artifact Tao.
He couldn't continue to add other functions to this Middle-Grade Auxiliary Spiritual Device.
As for this, He Song didn't pay too much attention.
With these functions, it was actually enough.
This really was just an auxiliary spiritual device, after all; to add too many functions to it was indeed asking too much of it.
At the same time, it was also asking too much of He Song, who had refined it.
In the future, if He Song wanted his spirit artifacts to have other functions,
He could naturally try to refine a Middle-Grade Spiritual Device that contained such functionalities himself.
In this way, there was no need to add too many functions to a single Middle-Grade Spiritual Device.