Heaven Sealing Earth Locking Killing Formation

Used to seal the Undying Willow
== Description ==
The first runic chain finally reached the top of the sphere. Once it did, the chain brightened, and no matter how the sphere trembled, no more runes were broken.
Then more and more chains managed to reach the top. Any chains that managed to reach the top no longer broke. As more and more of the chains became complete, the trembling of the sphere lessened until it was still.
Ten thousand chains had tightly wrapped the sphere.
With a final hand seal, the runes on the sphere began to revolve, causing it to shrink.
In just a moment, it was only a couple of miles wide. It had to be known that the original Undying Willow had been dozens of times larger than that. It had been compressed to this point.
But once it reached this point, it began to shake once more. Most likely, the Undying Willow inside was struggling crazily. Yet, it only managed to stall the compression for a moment before it continued. In the end, it became the size of a fist.
==References==