章 148: Chapter 147: The Dilemma of the Sword Monarch

Only powerful beings in the Body Integration Realm and Transcendence Tribulation Stage can refine the Secret Realm. After the refinement, the Secret Realm will come with its exceptional rules, such as the random tests in the Mysterious Secret Realm, where Dream Pure had left only her remaining soul. Her strength is not enough to trap everyone in illusion or dreamland, so that's caused by the Secret Realm rules.

Another example would be the three tests in the Sword Tomb, also due to the Secret Realm rules.

These types of Secret Realms are their personal belongings, having a certain independence from the Nine Provinces World. When Yin Yang Heaven Seal was enlightening Nine Provinces' Spiritual Treasures, it did not enlighten the Spiritual Treasures in the refined Secret Realm. Therefore, the Spirit Sword of the second test is still a normal Spirit Sword, and it has not gained a soul.