琉璃月下那璀璨的身影
[liú lí yuè xià nèi cuĭ càn de shēn yĭng]
Literally translated it would be The Glittering Figure under the Glass Moon. In the realm of online nicknames, it's often meant to invoke an image of a beautiful, unforgettable figure bathed in moonlight, perhaps hinting at romance, mystery, or melancholy.