However, the most exhaustive one leads to the idea of renaissance - agricultural cycles commencing in the spring time.
This change, when the spring breeze is expected to wake up the freezed earth, is metaphorically revealed in the idea of high expectations for good news after going through ordeals. Those hopes are mutually shared among people regardless of time and place. And the hope that one exhibits through the lyrics and music of this Chinese classic new year's song (given its history).
Anyway, happy new year, 新年快乐!🧧 And, based on one of my favourite cultural intersections - be the head and not the tail, or in a different variation 年年有余!