There is a disease in this world called "reverberation"
Before a person dies, if there is something in his heart that he cannot let go of - not just an ordinary thing that cannot be let go, but the kind that is twisted into a knot, rusted into iron, or rotted into mud - his obsession will not dissipate with the body, but will "echo" somewhere in the human world.
Reverberation like a bubble. In the bubble is the most painful day before his death, repeating itself endlessly. People outside the bubble cannot see, hear, or enter. But the bubble will slowly grow, encroaching on the real space. When it grows to a certain extent, the living people around it will be "dragged" in and become new characters in the echo, performing the same old drama over and over again for the deceased.
If left unattended, the reverberation will eventually "break" - not break away and dissipate, but explode. The repercussions of the explosion will involve everyone within a radius of several miles, trapping everyone in the same nightmare and never being able to get out.
There have been three "reverberation blasts" in history:
In the thirty-fourth year of Jiajing's reign in the Ming Dynasty, there was a great earthquake in Guanzhong, killing 830,000 people. History books say it was a natural disaster. In fact, the echo is broken.
In the first year of Tongzhi in the Qing Dynasty, there was a plague. Many people died, the echoes spread into pieces, and it exploded.
·In the 32nd year of the Republic of China, there was a famine in the Central Plains. The third time.
After three times, there was a group of people in the world. They call themselves the "Echo Bureau" - they specialize in dealing with echoes, entering, breaking, coming out, and closing bubbles.
By this generation, there are not many people left in the Echo Bureau. Only one and a half gamebreakers remain.
One is called Shen Yan. Who is half called Gu?
Purpose: redemption