Paper Instead of relying on expensive reed or hide, a new process made paper from any tree. It took 1000 years to reach Europe. Tsai Lun China 105 Paper Instead of relying on expensive reed or hide, a new process made paper from any tree. It took 1000 years to reach Europe. Built on Parchment Led to GunpowderPerspective drawingPrinting pressBlock printing Stories Toward a Republic of Letters