Dragonkins had extremely high resistance against soul attacks. Some of the dragonkins were even born with soul attacking skills.
The Infernal Dragon was one of them.
The Imprisonment Chain possessed the effect to seal souls, rendering the effect of soul attacks on the chain useless. This was also the reason why Lin Jian was afraid of it. He could not even fight back. If the chain touched his body, it would immediately penetrate through his body and his soul would be locked. When confronted by such chains, he could do nothing but dodge it.
Yang Yang was excellent in physical attack. He could use his relics to avoid the Imprisonment Chain from touching his body. However, to some extent, it would be dangerous to encounter the Imprisonment Chain for a person whose soul was not strong enough.