Xier Tao's mother's necklace has magical power and can open the hall of rebirth. In the campus comedy Meng Xueyuan, Xier Tao's mother's necklace is described as an excellent energy storage device, in which the stored energy can perfectly blend two completely different energies, which is helpful for the resurrection of the dark emperor.

Please note that the description of Xier Tao's mother's necklace may be unrealistic, and her magical ability should be regarded as fiction.