Please provide me with the design you want me to write about! I need to know what "Curtain 4" refers to.

For example, tell me:

* What is the design for? Is it a building, a product, a graphic, a website, a piece of clothing, etc.?

* What is the purpose of the design? Is it functional, aesthetic, symbolic, or something else?

* What are the key features of the design? What makes it unique or interesting?

* What is the target audience for the design?

Once I have this information, I can write a detailed and engaging introduction about "Curtain 4" that is split into multiple parts with bold and italic keywords for emphasis.

I look forward to helping you create compelling content!