Knowing this method made him feel much more at ease.
With a slightly better understanding of this world, his impression of the big demon egg improved as well.
In the evening, he found a secluded corner where he was unlikely to be seen, picked a long, flat stone, and planted it in the ground. He then drew a portrait of the egg on it with a black pen and surrounded it with an Array.
Next, he sat down to eat and drink, gathered some firewood nearby, and as dusk approached, creatures began to stir in the darkness.
Then he recited a Spell, and a black smoke enveloped both him and the Array.
Within the smoke, he seemed to gain the ability to see at night, able to observe the movements around him.
He could even read "The Book of the Slave" under these conditions.
He understood another passage, which told the story of a blood spring.