Once he had a home, naturally, he must use a "fence" to encircle it.
Putting up this "fence," undoubtedly, was a massive project.
Li Xu calculated that the Main Peak of Cloud Mist Mountain, along with its seven sub-peaks, covered an area of twenty to thirty square kilometers. To conceal it with a grand formation, him alone would probably need years and years.
To exchange for it directly from the system and have it set up instantly was no doubt the most convenient and hassle-free method. However, the remaining White Diamonds in his account were hardly enough to cover a fraction of this colossal project.
Dismissing the thought of taking a shortcut, he decided to earnestly catch up on a subject he had neglected before.
That was Formation!
A Formation, put simply, is powered by Spirit Veins and uses spirit patterns to outline the pathways and circuits in the mountain for the flow of Spiritual Power. Different pathways and circuits enable different functions and effects.