I think it's incredible that the Diamand Sutra was the first printed book that was dated in history.  I think it is also interesting that it had been printed in block printing, the first form of book printing. I believe this ancient piece of history is magnificent and should be preserved for future generations as it had survived being buried simply to be rediscovered by modern day scientists making it even more exciting to be rediscovered again 1000 years later.

You had said that it was not the first book that was block printed.  Do you know what book was the first?