有梦不觉夜昧长
[yŏu mèng bù jué yè mèi zhăng]
This roughly translates to: 'With a dream, you won't feel the night is too long'. It conveys an optimistic attitude where dreams make waiting more hopeful. If you are pursuing something or someone worth it, then time will seem to fly, no matter what happens, the process itself may not be easy and happy, but it is worthwhile because you are doing it for your dream.