"The Milky Way Seemed to Fall from the Ninth Heaven..."

The next day.

Eternal Night New Calendar, Year 04, April 5, afternoon.

The Nine Heavens Lightning-Inducing Tower was officially complete, and its first trial run was about to begin.

Chen Fan stood on the Black Tortoise Plains, looking at the enormous structure ahead. Independent cubic chambers were linked together, rising from the ground and covering a vast area.

This was the Nine Heavens Lightning-Inducing Tower!

A masterpiece of the Mortal Domain.

"Domain Lord."

Eight Hundred ran over to report. "Everyone is in position. Each member assigned to operate an Exotic Treasure has a miniature Heavenly Thunder Formation inscribed at the base of their thumb, ensuring they can receive Thundercaller's commands at any moment."

"Good."

Chen Fan nodded slightly and said under everyone's gaze, "Activate it."

The next moment—

The first cubic chamber activated.

The Heavenly Thunder Formation collided with an Exotic Treasure, producing the first Pocket Silver Lightning. Then the second chamber, the third, and the fourth lit up in sequence, each activation orderly and precise.

Number-15 Heavenly Dao, Thundercaller.

It controlled the activation and shutdown of the Heavenly Thunder Formations with precision and relayed commands to the Mortal Domain members operating the Exotic Treasures. More accurately, it did not relay information at all. It used electric currents to control their muscles, activating the Exotic Treasures almost instantly, with virtually no delay.

The entire process was automatic.

Every delicate operation inside the hundred cubic chambers was handled by Thundercaller!

Until—

One cubic chamber after another continued to light up.

Chen Jiutian and Zhang Qianqiu stood nearby, their bodies taut, their fingers clenched together beyond their control, their eyes fixed on the enormous structure ahead.

The Nine Heavens Lightning-Inducing Tower.

The ninth level, the tenth, the eleventh...

The twelfth, the thirteenth, the fourteenth...

The silver light grew brighter as it climbed,