天亮之后梦终醒
[tiān liàng zhī hòu mèng zhōng xĭng]
This username 'Tian Liang Zhi Hou Meng Zhong Xing' translates to 'After Dawn, Dreams Finally Awaken.' It describes a moment of realization after waking up from sleep or metaphorically after experiencing something like illusions, hopes, or dreams which now come to an end in reality or with new-found wisdom.