"That should do it," I muttered to myself once I properly finished the first part of my job.
There were a total of nine stones. They all came from a natural source and were used as some sort of filler in the building, allowing me to chance upon them while scouring the ruins.
Then, using the time and relative peace of only a few cultivators remaining, I filled every single stone with a whole array of runes, making the best use of the little surface space each of them had.
"And now, let's test it!" I joyfully muttered to myself, quickly arranging the stones into a specific formation.
First came a hexagon. Or rather, an imaginary hexagon as I only planted the stones at its six corners.
Then, came the secondary part of the formation in the form of three additional triangles, each composed from one spare stone I had left and then placed in a way that made use of two corners of a hexagon to construct a triangle.