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The imperial family’s summer palace is in the northwest of the empire. People called this summer palace a ‘water castle’. It was undoubtedly named because of the large lake that surrounds the castle.

This castle is in the middle of a lake that is wide enough to contain a village. To be precise, the castle was built on a small island in the middle of a lake. From a distance, the castle appears to be floating above the lake thanks to the rock walls that surround the island.