放光

tā gāo xìng de shuāng yǎn fàng guāng

她高兴得双眼放光。

Her eyes lit up with pleasure.

tā liě zuǐ duì wǒ xiào zhe liǎng yǎn fàng guāng

她咧嘴对我笑着，两眼放光。

She grinned at me, her eyes sparkling.