World view: Future Fantasy (Western Fantasy + Woliu Technology)
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There is a magic defense formation like a city wall at the southernmost tip of the Adrava continent, called the Wall of Sighs.
Every year on the Day of Sighing, people from all over the continent would come to the wall and sing the Song of Junius to mourn the magician Junius who built the defense line and the magicians who sacrificed for it.
Chi Bei: "Can the dead still hear you?"
Passerby: "Junius is not dead. He used his soul to build a wall of sighs. If the wall of sighs is not destroyed, he will live forever."
Chi Bei: Wow
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Purpose: Cherish the people around you