The colossal face spanning across the high skies was none other than Lu Yao's vast divine will, materializing within the planetary atmosphere.
This familiar appearance was naturally based on the "Law of Heaven and Earth" employed by Mahayana Cultivators.
It was also an ability that only emerged after the creation of the Spirit Domain, where divine intent thrived ceaselessly, easily maintaining such divine skills.
Though it was merely a minor trick, it proved to be quite practical. The lightning spewed from the mouth was genuine thunder, possessing extraordinary might.
The voltage reached over a million volts, with an instantaneous current exceeding a hundred thousand amperes, emitting copious amounts of light and heat, and reaching temperatures of up to 20,000 degrees Celsius!
Anyone who could withstand a strike without dying theoretically had the possibility of Crossing Thunder Tribulation.
