The Netherworld, White Ghost Mountain Station.
Gu Xi and Tang Shuang got off the train ahead of time.
The two days on the train were enough for Gu Xi and Tang Shuang to get familiar with each other.
Tang Shuang had already resealed the Demon River Corpse Source into the Sealing Demon Box.
This resealing inside hadn't cost Tang Shuang much effort at all; she practically raised a hand and put away the exposed Demon River Corpse Source.
This more or less made Tang Shuang feel a bit uneasy in her Heart.
Along the way she not only helped Gu Xi replenish all sorts of knowledge for an Undead Mage, she also provided Gu Xi with detailed information about taking the entrance exam for Netherworld University.
Like where to register, what level one needed to reach, that sort of thing.
The most important part was, Tang Shuang had agreed to take Gu Xi to look for another Primordial Body similar to the Demon River Corpse Source.
