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The Chinese legend “The Butterfly Lovers”, also known as “Liang Zhu”, depicts two lovers transformed to butterflies. The butterflies symbolize the gray matter of the human spinal cord with well-organized cells in the dorsal and ventral horns. This imagery beautifully conveys the idea of transformation from embryonic to adult spinal cord. See page 193–213 by Yingchao Shi et al. for details.