为了与你一生一世我在拼命积攒运气
[wéi le yŭ nĭ yī shēng yī shì wŏ zài pīn mìng jī zăn yùn qì]
For a lifetime together with you, I am desperately gathering good fortune (luck). Indicating strong determination through efforts made with hopes of changing fate to ensure lifelong happiness shared with someone important to them.)