"How about this cave?" Song Wen asked.
"I leave it entirely to you, Senior," Qing Shuang said.
Song Wen turned his hand over and took out four azure Formation Flags. They drifted into the cave and finally planted themselves in its four corners.
Then Song Wen formed hand seals and directed them at the four Formation Flags.
Arcane patterns extended from the four Formation Flags, crisscrossing one another and forming a complex formation on the ground in an instant.
Immediately, the surrounding spiritual energy rapidly converged on the cave.
Song Wen did not let this phenomenon continue. With a wave of his hand, he scattered several thousand Supreme-grade Spirit Stones onto the formation's anchor points.
At once, the formation stopped drawing spiritual energy from the surroundings and began extracting it from the Spirit Stones instead.
"This is a ninth-tier Spirit-Gathering Formation. It will provide all the spiritual energy you need to rebuild your foundation."
After speaking, Song Wen took out eight small black flags and several hundred low-grade immortal stones, which likewise flew into the cave.
These eight black flags, however, were placed around the perimeter of the Spirit-Gathering Formation.
Song Wen formed hand seals and cast his technique again.
These eight black flags were what actually constituted the immortal-tier formation.
Once the formation was complete, Song Wen spoke again.
"This is the Cloud-Hiding Sky-Covering Grand Formation. It offers both concealment and defense. Unless an immortal comes in person, no one will be able to break through it, even in my absence."
"Thank you, Senior," Qing Shuang said.
"Go into the formation," Song Wen said.
"Aren't you coming in, Senior?" Qing Shuang asked.
"I won't go in. I'll stand guard outside the cave," Song Wen said, then added, "Remember, do not rush to take the Seven-Colored Lotus before your injuries