He had previously devised a method, which was to apply a layer of wet, soft red clay on the crossbeam, and when the red clay was semi-soft and semi-hard, to tie the threads and wait for the clay to dry, thus securing the threads.
He hoped that this piece of fabric would be sixty centimeters wide and square.
Therefore, he needed to set up six hundred vertical threads in advance.
Thus, he needed three hundred grids, each grid about two millimeters wide, with not very high requirements.
Normally, such dense grids are difficult to make, but if he uses threads half a millimeter thick, threading with a needle, the distance between them can be less than two millimeters.
He needed to tauten three hundred threads in parallel.
Returning to what was mentioned before, the fabric's vertical threads are divided into odd and even columns, or positions one and two.
All odd columns' vertical threads needed to pass through the grid, which was only two millimeters wide.
