How to tie an ancient bamboo stick?

The ancient steps of tying bamboo sticks.

1. Prepare the bamboo pieces for making bamboo slips, and try to ensure the length, width and thickness of the bamboo pieces are consistent.

2. Then, a groove is respectively processed at both ends of the bamboo piece.

3. Next, cross the string on the grooves processed at both ends of the bamboo piece.

Finally, put the other end on in the same way.