Twenty years ago, three thousand elite soldiers set fire to the city.
Twenty years later, descendants of the Yumen came to the city to look for the sword.
You can't tell right from wrong, and you can't tell right from wrong.
Thousands of people's ashes flew into the sky and the city was washed away, and the souls of thousands of soldiers were scattered and destroyed.
After the fire and the sword, only the copper city remained.
Intention: Let go of the past