This is a move to remove the body's restrictions on chakras and release excess energy. In the flowing meridian system of chakras, there are "eight doors" that inhibit and control the chakras in the body, namely, opening, closing, opening, hurting, unique, Jingmen, shocking and dead. These eight gates will set a limit on the number of chakra in the body, but this technology can force chakra to go beyond this limit, resulting in its original power of dozens of times. However, while gaining strength, the performer will also be injured, so this technique is listed as one of the forbidden techniques.
When all the Eight Doors are opened, it is called "Eight Doors Avoidance Array", which can instantly gain ten times the strength of Gokage, but it will also die because of exhaustion of vitality.
Note: Everyone's body has eight doors. Anyone who is trained and able to bear the load of opening eight doors can open eight doors.
Note: Everyone has eight doors, and a powerful ninja knows enough about the chakra point of the meridian system. It's natural for Uchihiro Shoko Asahara to know the Eight Doors. Knowing the Eight Doors may be common sense in the ninja world.