. English: Yang Hui 9x9 magic square 中文（简体）‎: 杨辉 九九幻方图 . 13th century. Yang Hui 13th century 571 YANG HUI 9X9 MAGIC SQUARE

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Size: 2367px × 2111px
Photo credit: © The Picture Art Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., /, /., 13th, century., hui, yang