Does everyone need six points on their heads when monks shave? Do nuns use it?

The custom of burning the scar is said to have originated in the Yuan Dynasty. At that time, a monk named Zhide was revered by Yuan Shizu. When he preached the precepts, he stipulated that everyone who was ordained should burn incense on the head, three incense sticks for the novice monk and twelve incense sticks for the monk as a lifelong oath. Such a small invention was later quietly spread and passed down from generation to generation. This is, of course, a bad habit that harms the body and a small local product of Buddhist culture in Han Dynasty. From here, we can also see a little feature of the Buddhist cultural circle in Han Dynasty. Simply put, the "popular belief" has much stronger energy than the "elite culture" composed of a few thinkers (Buddhists) in the later period of Buddhism development. Zhi De, the Yuan monk who invented the burn incense scar (commonly known as the "burn incense hole"), was not a Buddhist at all, but his little invention was far-reaching and far-reaching, which was unmatched by any famous monk's theory after Huineng.

Besides,

On the monk's bald head, several scars were burned with incense, which is called burning ring. Anyone who wishes to escape into an empty door, after shaving, will burn the ring, and after burning the ring, he will become a formal Buddhist disciple. Strangely, monks in India, the birthplace of Buddhism, never burn precepts, and they are spared the pain of this flesh when they enter Buddhism.

It turns out that China's monk ring burning began in Liang Wudi in the Liang Dynasty in the Southern Dynasties. Liang Wudi was a fanatical Buddhist. He gave up his life as a monk in a Buddhist temple three times and was redeemed from the temple by the minister for three times. At that time, he granted amnesty to death row inmates all over the world, making them believe in Buddhism and become monks. But they were afraid that they would escape from the monastery and commit another crime, so they took Qian punishment (a criminal law with tattoos on their faces) as a model, burned a ring scar on their heads to identify and capture them at any time, which was the beginning of Buddhist ring burning in China. Later, burning precepts was regarded as the beginning of penance in Buddhism, which gradually applied to all monks and continued to this day, becoming one of the symbols of monks in the eyes of secular people.