an ancient feudal State in Shaanxi
郇 is a rare kanji that refers to an ancient feudal state in Shaanxi. Its meaning is limited to this historical place name and has no broader conceptual center.
郇 is a historical place-name character. The left component 旬 likely contributes the sound, while the right component ⻏ (阝) is a common element in place names. The exact historical development is uncertain.
The left side 旬 suggests a ten-day period, and the right side ⻏ is a city wall. Picture an ancient city in Shaanxi that was founded in ten days: that city is 郇.
For シュン, imagine the ancient state's name being pronounced like 'shun' as in 'shun the enemy.' The city walls (⻏) were built quickly (旬) to shun invaders: shun -> シュン.
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