Hi, for those who can read Chinese, this is a voyage through the
lower realms by a Delog. In Tibet, some accomplished practitioners
can temporarily die and travel to other realms to bring back their
experiences for teaching others. These type of practitioners
still exist today.
This account is in 20 parts and very graphic and detailed.
It is mainly on the hell realms and what kind of karma causes
rebirth there.
http://www.zhibeifw.com/fjgc/dyyj.php