Destiny zero didn't understand what I wanted to find out.

1, the holy grail is divided into big holy grail and small holy grail.

Dapan is a large magic circle built at the foot of Yuanzang Mountain where Liu Dong Temple is located. This magic circle is used to extract the magic necessary for the holy grail war ceremony from the spiritual vein of Dongmucheng and store it. About 60 years, you can have enough magic to hold a ceremony. If the last Holy Grail War did not use up the remaining magic, the time for storing magic next time will be shortened. That is, the time limit for the resumption of the holy grail war has also been reduced accordingly.

The little holy grail is the prize won by the winner of the holy grail war. In fact, it is just an instrument to preserve the soul of a dead servant and a necessary equipment to realize the third kind of magic.

"Root", the home of all magicians, is considered as the "seat of God" outside the world, recording everything in this world and making everything in this world.

This thing is simply explained as follows: Root has become the highest goal that all magicians dream of because of its infinite magic. On the other hand, Gaia will not allow anyone alive to reach the source and pose a threat to himself. Therefore, Yu San put forward a creative method: gather magic by building the Great Grail under Dongmu, and after summoning seven followers and destroying them all, temporarily bind their souls with the Small Grail, because when the followers return to the spiritual seat, they will open a path to the root. At this time, the seven followers were put back at the same time, and the road was fixed by the magic condensed by the Great Grail, so that the magician could avoid Gaia and reach the root directly through the road opened by the followers.

2. The reason why the heirs destroyed the Holy Grail dates back to the third Holy Grail War. In the third Holy Grail War, the failed Ainzben family summoned the eighth kind of hero for victory, the avenger-Angela Newman-the anti-hero, which is the purest evil. However, for some reason, the Avengers were defeated at the beginning of the battle and were taken back to the Holy Grail. This is the pollution source of the holy grail. However, the winner of this war and the master of Tong's family have their own plans. Makiri Zoruken, who didn't want to die but longed for eternal life, made a wish to the magic source connected with the Holy Grail: let the purest demon come to the world through the fourth Holy Grail in the fourth call 60 years later. At that time, he will have this perfect, eternal and powerful body through the magic of soul transfer.

Sixty years later. The fourth holy grail war began. Unwilling to fail again, in order to win, the Ainzborn family hired a magician named Emiya Kiritsugu. As far as the magician's pure strength is concerned, cutting heir is not the best candidate, but he has a cool and cold-blooded mind and the determination to sacrifice all other interests for personal justice-which means that he doesn't care about sacrificing his immediate life for long-term justice. In order to become the winner of the fourth holy grail, he used up all legal and inhuman short hands (such as assassination with a long-range sniper rifle in the magic war; He even took his opponent's relatives and lovers as hostages, and even ended his opponent's life without mercy after the opponent surrendered, and finally ended the Holy Grail War. At the beginning of the calling ceremony of the Holy Grail, Emiya Kiritsugu realized that the demon about to be born in the world was active in the Holy Grail, which was pure evil summoned by Makiri Zoruken 60 years ago. Just before the birth was completed, Emiya Kiritsugu used a decree to force Saber to destroy the polluted Holy Grail. Great magic appeared in an instant. The Avenger, who lost the access to the real material world-the Holy Grail, once again returned to the magic source that gave birth to it, waiting for the next time when Dongmu Town was full of magic. When that moment comes, it will also be the beginning of the fifth holy grail war.

Cherie died of black mud from Newman, Angola, which flowed from the Holy Grail. You can also call it a curse.

The explanation can be traced back to the third war. The Einzbern family wanted to summon a powerful god, so they found a demon king named Angela Manuel in a religious legend called Zoroastrianism in the Middle East. It is said that the demon king fought with the gods for 9000 years, which was very fierce. So the Ai family summoned Angela Manuel by tampering with the subpoena. This hero belongs to the eighth class "Avengers" rather than the other seven classes. But in fact, due to the numerous branches of Zoroastrianism, on the one hand, the records Ainz saw were not true, on the other hand, the Holy Grail could not summon "gods" and "demons", but only heroes or anti-heroes, and the real Angela Manuel was just an ordinary young man with dreams. In order to save the world from evil, he sucked all the evil in the world on himself, so people hated him because he had all the evil in the world. But people admire him, because he dares to bear all the sins by himself, so this young man becomes an "anti-hero" (that is, a hero different from ordinary heroes) and is summoned.

Because he is just an ordinary young man, Angela Manuel is very weak. In the third war, he was killed as soon as he came up. After being nailed, his soul was sucked into the holy grail. After the holy grail war, he returned to the temple of the soul with other souls. Unfortunately, because Angela Manuel has all the evils in the world, the Holy Grail has been polluted by him, and the colorless and pure magic in the Holy Grail has become an evil force. These magical forces look like a pile of black mud. This black mud is very dangerous, and ordinary people will go crazy or even die if they touch it. This is Chihiro's death.

There is also a saying that his magic-innate time control, is very stressful to the body. Too much use will slowly affect physical fitness, a bit like wasting disease, and will slowly weaken and die.