My dizi arrived today. Apparently appyling the membrane is a skill in itself. Apparently I'm also supposed to glue it on, but I might not have the right glue. It's very unnerving gluing it on. I will try again when I'm less tired.
It sounds great though (the membrane stays on with moisture alone for about a minute. It's cool to have a new sound.
EDIT: if you search for "dizi membrane glue" in google, you get this post as the second hit.