When you make tea, you do the act of purifying by wiping the tea utensil in which the matcha is kept. Let's take a look at how to wipe the "natsume", which is the most commonly used tea utensil.
[1] After handling the Fukusa, hold the Fukusa in your right hand.
[2] Pick up the jujube with your left hand.
[3] Wipe the top of the lid of the natsume so that you can write the letter "こ" in hiragana.
[4] For men, wipe in the shape of the letter ko, and then wipe from the front to the other side. This is called "kobuki". In the case of tea utensils other than jujube, it is the same for both men and women.