Fourth-Order Array Dao Proficiency

After finishing his cultivation, Li Yuan slowly withdrew his power.

The token displayed the new round of duty assignments.

Fifth Node Station under the Main Peak Grand Array, western side. Duty duration: five days.

Li Yuan put away the token and turned into an evasion light, flying toward the main peak.

The Fifth Node Station was roughly three hundred zhang away from the Seventh Node Station he had previously guarded, likewise situated on a mountainside platform along the main peak.

The array pivot stood about the height of a person, dark bluish-green from top to bottom.

The Array Dao Pivot automatically began analyzing the array pivot's structure.

Li Yuan sat cross-legged beside the array pivot and began his watch.

The first day, then the second day.

The array pivot operated steadily, its spiritual power flow fluctuating within normal limits. Cross-layer feedback circuits occasionally activated, but the Backflow was minimal and had no noticeable effect on overall operation.

The morning of the third day.

An anomaly appeared in the array pivot's spiritual power flow.

The change had not occurred abruptly, but had gradually revealed itself over roughly a quarter-hour. The spiritual power input in the first layer of the array circuits was slowly declining.

A spiritual power tide.

The spiritual qi of the Upper Realm was not constant, but moved in periodic currents. Most of the time, these currents were minuscule and could be ignored in their effect on a Fourth-Order grand array. Yet on occasion, larger tidal fluctuations would arise, causing the spiritual qi concentration in certain regions to plummet for a short time.

The region where the Fifth Node Station stood was undergoing a rare spiritual power tide trough.

The spiritual power input continued to decline.

The spiritual power flow through the node station's array pivot abruptly fell by