The reason the Tiger-headed Supreme Treasure's spirit resembled its host, Mingzhu, so closely was that Mingzhu had tampered with its consciousness and memories from the very moment the Tiger-headed Supreme Treasure, Hu Ya, gave birth to its spirit. Hu Ya's spirit had never been a blank sheet of paper from the start; it had been shaped in Mingzhu's image.
From a certain perspective, although a spirit possessing Mingzhu's consciousness and memories was a duplicate, it was still deeply connected to Mingzhu herself. So long as the spirit existed, there was a way to bring Mingzhu back to life. This was something Mingzhu had considered from the very beginning, when she altered the spirit.
Even if such a revival was false, merely creating a duplicate with the same consciousness and memories as Mingzhu, how could one say that she was not Mingzhu? Among Demonic Cultivators, living on in this manner was an acceptable form of their many parasitic reincarnation arts, and was quite common...
The reason the Tiger-headed Supreme Treasure's spirit so readily accepted Chen Hua now was not merely due to its own preference. It was also because Chen Hua had promised to help it find Mingzhu. If its host truly no longer existed, he would attempt to copy her and have her reincarnate...
In the thirty-three million, two hundred ninety-five thousand, six hundred and thirty-first year, Chen Hua's deception did not last long. After you spent more than ten thousand years gathering all manner of materials to condense blood and vitality for him, finally using the powerful life force of the Life Dao Patterns to re-form a body for him upon the foundation of his bones, you summoned Chen Hua's remnant soul once more.
After more than ten thousand years, the relationship between Chen Hua's remnant soul and Hu