Reference to 'Sky Burial' comes up in Xinran's books. At first it doesn't make sense, but when you learn what she is referring to, it makes sense. I've yet to read this one of Xinran's books, but I have read references to it in a number of places. You can read about the book 'Sky Burial' which she wrote in 2004 here.
The video below may seem a little macabre at first thought, but I like the line at the end. When we are dead, we are dead. If you are buried underground worms take your bits away. I like the idea of the sky burial, although we don't have such birds to do the deed here. Maybe the crows will take the bits away.