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In page Empress Myeongseong:

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The royal couple's surviving son, Sunjong, was a sickly child, frequently catching illnesses and convalescing for weeks.[citation needed] The Empress cared personally for the Crown Prince and sought help from shamans and monks. The latter received rewards for blessings. Had the Crown Prince died, his rights would have devolved to the offspring of a royal concubine. The Crown Prince and his mother shared a close relationship despite her strong personality.[8]