This top-grade Daoist art and the restriction technique Wen Zhong had given Di Xin earlier both concerned the same field.
That was Daoist restrictions.
But as Di Xin studied it more deeply, the difference between the two became increasingly apparent.
Only after he had read through the Immortal Restriction Technique from beginning to end did he realize how precious it was.
If the restriction technique Wen Zhong had given him was like a stream, then the Immortal Restriction Technique was like a vast ocean. The two were simply incomparable.
The restriction technique covered the basic knowledge of restrictions, while the Immortal Restriction Technique had greater breadth and depth.
The restriction technique dealt with the problem of 1 + 1 = 2, while the Immortal Restriction Technique not only explained that problem but also the principle behind why the answer was 2.
That was in terms of depth.
As for breadth, the restriction technique introduced relatively little, while the Immortal Restriction Technique covered much more.
The restriction technique touched briefly on complex restrictions, while the Immortal Restriction Technique explained their principles and methods of construction in detail.
Di Xin read and pondered at the same time. The information was already in his mind; all he lacked was a thorough understanding of how it fit together. With the Immortal Yuan Records also teaching him how to use Daoist arts, Di Xin's rate of comprehension was astonishing.
After reading it through several times, Di Xin began focusing on a restriction that could prevent probing by Divine Sense and the Heavenly Eye, while also blocking sound.
In short, it created an isolated environment, separating everything within the restriction from the outside world.
Divine Sense was like an extension of sight, except its effective range was far greater.
Anything visible could be examined with Divine