Gyoku (玉, gem) is an ore found abundantly in the Kingdom of Tai and a little found in the Kingdom of En. Gyoku is so valuable and sought after that it has caused civil wars in Tai.
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Hakkei Palace with gyoku.
Gyoku (玉, gem) is an ore found abundantly in the Kingdom of Tai and a little found in the Kingdom of En. Gyoku is so valuable and sought after that it has caused civil wars in Tai.