The mattress finally arrived today and assembled the bed frame.
I was about to open the box and start assembling it, but I was embarrassed that there was no assembly manual.
However, after roughly matching it, I thought I knew how to assemble it, so I started assembling it.
After assembling, I saw the bed and felt that my choice was excellent.
However, it was regrettable that there was no assembly manual and that there were several partial tears in the fabric.