Japanese ancient hairstyle

1, that's called "the head of the moon generation". Because in war, hair is often scattered for various reasons. At this time, the hair in the middle and front of the head will cover the face, block the line of sight and affect the battle. So some samurai shaved off the hair in the middle and in front of their heads, so that even if the hair was scattered in battle, it just hung freely on both sides of their heads and backs, which would not affect their eyesight. Because of the obvious effect, samurai followed suit and became an unwritten tradition over time, but this hairstyle was limited to the samurai class. As for those who haven't shaved, they are also individual exceptions or commanders who don't go into battle in person.

2. Because after Fujiwara came to power, the emperor could no longer really hold power in his own hands. To put it bluntly, the shogunate has real power, and the emperor is just a puppet. China's royal family and North Korea's royal family have real power.