When do you cut the duck tail? Now is a good time to cut it.

Cut the duck's tail and find an auspicious day. Never mind. Solemnly declare: the answer is for reference only, don't be blindly superstitious.

It should be a Manchu custom for boys to leave duck tails. Many boys in other families deliberately leave a handful of hair behind their heads when scraping tires. This is to leave a duck tail, and some places are called pig tail. It is called duck tail because it is long and looks like a duck tail on the back of the head. It is called pigtail, but it is obviously a legacy of the Qing Dynasty.