Strictly speaking, Zhi Yan was not created by Bulo as a duplicate, but rather a form of resurrection.
At that time, although Zhi Yan turned to dust and her soul dispersed, her core soul energy remained and was captured by Bulo. Using this core soul energy, she was reconstructed into a complete soul.
However, the reconstructed soul was missing certain memories.
Afterward, Zhi Yan was granted the Void Bloodline, naturally restoring her perfect physical form.
Of course, the reason Bulo went to such trouble was not for Zhi Yan, but for Lanling, to lure him in.
"What memories do you have in your mind now?" Lanling asked.
Zhi Yan replied, "My memories extend up to leaving Sky Academy; everything after that is completely unknown."
Lanling understood. When Bulo resurrected Zhi Yan, it wasn't that she couldn't restore all her memories; the memory of Lanling was erased to prevent Zhi Yan from leaking information or siding with Lanling.
