What is the special meaning of symmetrical tassels in ancient headdress?

The tassel was made by bending a handful of strings to form a handful of spikes, which hung above a dangling rope to make a tassel. Over time, a wooden tassel head appeared, which was wrapped with cloth or other ornaments on the outside, and a hole was cut in the center of the head, through which a string could be passed to connect the head to the spike and allow the tassel to be hung.