The reason Xia Nan wanted to connect with the collector named "Aurie Silver Heart" through Ellison's channels.
The main reason is that he learned from the other that this collector is very interested in exotic items, and Ellison himself often gathers information from Aurie in search of traces of his father, Lailo Moerton.
Currently in his spare time between missions, with several dozen days until the Moon Tide Banquet, he thought of taking this opportunity to find another secret realm, to replenish the energy of the [Dream Weaving Corridor], enhance his own strength, and prepare for the matters concerning the "Algae Scale" Dodd.
Thus, from the moment Xia Nan followed Aurie into the tower, his attention remained in a highly concentrated state.
