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A few weeks into the voyage, Rushu started experimenting with her fabrials. In the meantime, she reprimanded Lopen for making inappropriate jokes near Rysn. Using a pair of silvery hoops with ruby, she explained conjoining fabrials that move in opposite directions to Rysn. They discussed why spanreeds don't work on a ship, but these fabrials did; it was based on perception. Rushu proposed to Rysn that she could make Rysn's seat hover in the air, although she would not be able to move it. When putting the fabrials away, Rysn spotted sheets of Aluminum. The ardent explained those can block spanreeds and Navani wanted her to experiment with them.{{book ref|sa3.5|5}}
When Huio went to nearby land to send and receive messages, Rushu gave him some aluminum plates to use in experiments when writing to her on the ship.{{book ref|sa3.5|7}} Later the expedition campscamped a night in a small cove. Rushu went to Rysn to experiment with her chair, without waiting for Rysn's permission. She explained that when Huio was playing with her spanreeds he made an important discovery. If aluminum is placed in the spanreed in the right way, only movement along one direction is transferred to the other reed. She demonstrated the effect by making Rysn's chair hover, and then push the chair around. Something thought to be impossible before. At [[Nikliasorm|Nikli]]'s suggestion Rysn asked Rushu to report the discovery back to Urithiru immediately.{{book ref|sa3.5|9}} Later Rushu and Huio, installed a mechanism on Rysn's seat that allowed her to hover and rotate her seat.{{book ref|sa3.5|10}}
When the expedition reached Aimia, Rushu joined Huio and the Lopen in a boat to the shore.{{book ref|sa3.5|12}} They arrived on a beach full of gemstones. When one of sailors asked if the treasure was cursed, Rushu answered that they were there to loot the place. Rushu made some sketches of the skeletons on the beach before joining Lopen and several guards to move inwards on the island.{{book ref|sa3.5|13}}
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When they reached the outskirts of the city, Rushu sketched some of the buildingbuildings while Lopen flew into the air to look ahead. They moved on and surveyed the city, noting how much it had fallen to rublerubble. Rushu noted how important this place would be for historians to help understand the past. Lopen asked where to find the [[Oathgate]], and she replied that most are located for easy access by the ruling class. One of the sailors brought a note from Rysn, warning them something felt off, thatas it all looked too perfect. She asked Lopen for one of the gemstones from the beach and inspected it with a jeweler's loupe. It was fake. They wonderwondered why someone would set this all up. After a short time they reached the location of the Oathgate, which was very decayed without a place to put a Shardblade. They concludeconcluded that it's was fake as well. The ardent asked the sailors to look for stairs or a trapdoor that could lead down. They quickly found it and Rushu used a Soulcaster given to her by Navani to remove the wall blocking the entrance to the cavern. She remarked that it would have taken an extraordinary effort to hide the Oathgate down in the cavern. Rushu was proud they managed to crack the secret, but Lopen was worried about the response from whoever was watching the place. Lopen left for the beach, and told Rushu to gather the sailors and not get killed.{{book ref|sa3.5|15}}
After the battle, they made a few more rounds through the city to sketch it. Lopen is talking to some rocks, and the ardent asked him if he could be less weird. They moved to the rowboats to get back to the [[Wandersail]], and Lopen praised Rysn's negotiation skills. Rushu concurred that it is strange they managed to survive.{{book ref|sa3.5|epilogue}}
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