Chen Lin tied a Xianji Stone to the Crow Puppet, placed an Image Retention Stone on it, then released it.
The Crow Puppet was no longer what it once had been. Not only were its materials superior, but through constant research and borrowing from other techniques, he had upgraded it into a Spirit Puppet at the Foundation Establishment level.
After Chen Lin gave the Crow Puppet its orders, it beat its wings and flew out over the sea.
Despite his powerful divine sense, it was still suppressed by the nightmare realm aura. The puppet had not flown far before reaching the limit of his control.
Chen Lin could only order it to fly onward for a while, then return automatically.
That was also why he had placed an Image Retention Stone on the puppet. Once he lost contact with it, he could no longer share its vision.
In his sight, the Crow Puppet dwindled into a tiny black dot, flying farther and farther away. Just as it was about to disappear, it circled once and flew back.
Chen Lin took it into his hand, removed the Image Retention Stone, and examined it.
After a while, he withdrew behind the barrier, walked in another direction, and repeated the process, continuing his exploration.
He proceeded this way until he had examined the waters all around the island, but found nothing.
Chen Lin was in no hurry. He returned to his starting point and sent the Crow Puppet out over the sea again.
This time, he expanded its range, ordering the Crow Puppet to keep flying forward and explore on its own, only returning once half the Top-Grade Spirit Stone's energy had been consumed.
He had used a Top-Grade Spirit Stone rather than a spirit crystal because the time the puppet took to