User blog comment:JorgeGG/Dar al-Islam (or Al-Umam Al-Muttahida)/@comment-1684852-20111013014935

From a comment of Fedelele, one thing that intrigues me is that from China the Muslims knew of paper making in the Xth century, but rather late of gunpowder (XIIIth) or did not made a simultaneous discovery it being good chemists themselves. They also knew of Block printing, but did not use widely or of no influence.