Ancient Times Table on Bamboo Strips

The Tsinghua table places factors across the top row and down the far right column. From left to right, or from bottom to top, respectively, the values are ½, 1, 2 . . . 9, then 10, 20 . . . 90. The rest of the table shows the products of these factors. | Research and Conservation Centre for Excavated Text/Tsinghua University