万人之中他最耀眼亿人之中她最亮眼
[wàn rén zhī zhōng tā zuì yào yăn yì rén zhī zhōng tā zuì liàng yăn]
'Among thousands, he is the brightest; among ten thousand she is the most sparkling,' emphasizing how unique, prominent, or attractive two people are in comparison to large crowds, highlighting their special appeal or qualities.