The work takes the human race's protective battle against demons and alien races as its core, praising perseverance, responsibility and feelings of family and country, conveying the belief that "every body can build a line of defense, and blood can protect all living beings", showing the perseverance and perseverance of the human race in troubled times, and inspiring readers to face difficulties and protect the things they cherish in their hearts.
Purpose: The work centers on the human race's defense battle against demons and aliens, praising perseverance, responsibility, and feelings of family and country, conveying the belief that "a mortal body can also forge a line of defense, and blood can protect all living beings." It demonstrates the perseverance and perseverance of the human race in troubled times and the spirit of passing on the fire from generation to generation, inspiring readers to face difficulties and protect the things they cherish in their hearts.