"And another thing..."
Chang Qing pointed at the ground. "Some of the insects' life force will also be stored here, so they can slowly recover from their injuries inside the formation."
"But don't get your hopes up for either of us. It only works for mortals and mulberry trees. Oh, right, your spirit insects too."
Not only could it attack, it could heal as well?
"Thank you, Brother Chang!"
Lin Ke was delighted.
These changes alone were already immensely useful to him.
After all, the original Earth Cicada Warm-Sand Formation had been nothing more than an ordinary formation. It had not even qualified for a grade, falling short of even low-grade spirit.
Yet after Chang Qing made a few simple modifications, it had gained these capabilities. That was quite impressive.
The original Earth Cicada Warm-Sand Formation had only cost a dozen or so spirit stones!
"This formation could also work in tandem with... hmm, perhaps I could set up a few points here..."
Chang Qing looked around, a thoughtful gleam in his eyes. He had clearly slipped into work mode.
Seeing this, Lin Ke refrained from interrupting and waited quietly beside him.
After a while, Chang Qing began wandering around on his own, inspecting and touching various spots before taking out some materials.
None of these materials were particularly expensive or rare. Their grade was roughly on par with solar essence.
Solar essence itself was not particularly precious either. It had only been difficult to gather because Chang Qing had asked for three jin at once.
"That tree spirit on your mountaintop would make a perfect formation core for controlling the whole formation. What do you think?" Chang Qing suddenly turned back and asked Lin Ke.
"Of course, you can replace the core later. More or less anything with blazing