The Secret Case of Zhenling Secretary: the Mystery of the Bone Jade

Su Jiuyan, the spiritual guard of the Zhenling Division, unexpectedly obtained the Winter Silence Bone Jade and was involved in a guardianship battle spanning the human world, the spiritual world, and the deep sea. From the contamination of the nightmare power in the cracks in the Kirigakure Village to the conspiracy of the remaining souls in the cracks in the Black Wind Valley, she worked side by side with Lin Yan, Lin Wei and other partners to gather the Shadow Walkers, the Yan Tribe, the Horse Tribe, and the Sea Tribe to establish the Three Realms Alliance, and gradually gathered the four bone jade of Winter Silence, Autumn Meteor, Xia Zhuo, and Chunsheng.​ Just as the core remnant soul was purified and the three realms ushered in a brief period of peace, the black shadow of the mechanical world broke the peace. They used metal spiritual veins to contaminate the core of the spiritual veins in an attempt to open a cross-border passage. Su Jiuyan led the members of the alliance to use the holy fire to forge restraint weapons, use spiritual vein resonance to fight against the mechanical army, and also established a spiritual vein sharing library to pass on defense skills.​ From the nightmare crisis to the cross-border battle, from fighting alone to the unity of all races, bone jade is not only the key to protecting the spiritual veins, but also a symbol of the fetters of the three realms. The remaining signal fluctuations in the mechanical world also indicate that this cross-dimensional protection will never end.​