The entrance to the Eighteen Star Caves is located deep within the Star Plucking Building.
Guided by Wenwan's instruction, Lu Xuan held the Thunderfire Order in his hand and arrived in front of a Spiritual Energy Whirlpool.
At the bottomless depth of the whirlpool, countless flashes of thunderbolts could vaguely be seen, forming an endless Sea of Thunder.
He held his breath and ignited the Thunderfire Order with his Spiritual Power.
A ray of lightning surged from the black order, wrapped in strands of pale flames, it enveloped Lu Xuan's body and entered the Spiritual Energy Whirlpool.
"This must be the Thunder Fire Asterism Cave."
A moment later, Lu Xuan floated in mid-air, observing the surroundings, and said with emotion.