神韵 is a classical aesthetic term in Chinese painting and poetry, championed by Qing-dynasty critic Wang Shizhen 王士禛 as the highest artistic ideal — capturing inner spirit (神) and lingering resonance (韵), not just outward likeness.
memory
神 = spirit, 韵 = rhyme/resonance — together: the spirit-rhythm of a work, the part you feel rather than see.