Literature Reference: 莹，玉色也。——《说文》；瑜，美玉也。——《说文》 Ying, the color of jade; Yu, a beautiful gem. Sources from 'Shuowen Jiezi'.
莹: A stone as smooth and lustrous as jade. Describing its pristine sheen and jade-like hue, it radiates brightness and grace, symbolizing the auspicious omen of a woman destined to marry a noble husband.
瑜:
The radiance of jade, auspiciousness and well-being, grace and composure.
Meaning: Ying Yu signifies purity and nobility, like a flawless gem.