What do you mean, misty rain is like sky blue?

This lyric comes from Jay Chou's Blue and White Porcelain and may have the following meanings:

1, emotional suggestion: In the lyrics, "misty rain" can refer to parting, loss or distant love, because misty rain is often used as a romantic symbol to express a distant and vague emotional state. The "misty rain is like blue" in this lyric can indicate that the protagonist is waiting or expecting some kind of beautiful feelings, but it feels out of reach.

2. Sentimental meaning: misty rain can also symbolize the ups and downs of life, which may represent obstacles, difficulties or setbacks in life. The lyrics of misty rain like a blue sky can show that the hero is facing difficulties and challenges, and he is waiting for the adversity to pass and looking forward to welcoming sunshine and hope again.

3. Poetic description: misty rain is often used as a kind of scenery description in literature to describe the gentle and hazy atmosphere of rain and fog. Here, "misty rain is like sky blue" can mean that the protagonist is looking forward to rain and enjoying the natural beauty.