Literature Reference: 西望瑶池降王母，东来紫气满函关。—— 《秋兴八首 五》 Gazing west to the Jade Pond where the Queen Mother descends, as purple clouds from the east fill the Hangu Pass. Source from 'Autumn Meditations, Part V'.
东: The East, the direction of the sunrise, symbolizes the essence of hope.
来: In the future, to and fro. Often used as a filler word in poetry and lyrics; the future, what is yet to come, tracing back to its origins.
Meaning: Purple clouds from the east filling the Hangu Pass symbolize the arrival of auspiciousness, nobility, and good fortune.