The key nodes of the three years of Jianyan in the Southern Song Dynasty, such as the defeat of Yangzhou and the mutiny of Miao and Liu, set up a very tense and realistic stage for the story, allowing the protagonist's time-traveling behavior to be closely connected with the historical torrent, and readers can deeply feel the turbulent times. The use of modern knowledge to improve tactical equipment, from saltpeter ice making, improved divine arm crossbows to the invention of incendiary bombs, not only demonstrates the excitement of technological dimensionality reduction, but also reasonably integrates ancient war scenes, adding novelty and interest to the story. It also meets modern people's expectations for "cheating" plots in ancient time travel themes.
