A bit late, since it's already been december, but for anyone who want to go some other time: You might want to check out: http://home.online.nl/mdej/Datangshan/datangshan.htm" onclick="window.open(this.href);return false;
A description of how I got is on the page as well as the name and adress in Chinese. All scanned from a booklet from the museum itself, so it must have been right at the time.
Good luck, it's a great museum. Bring a warm coat if you go in wintertime, I was there in december too and it was COLD!!
Marcel