- Protagonist: Qin Feng, a retired instructor from a modern national-level special operations brigade. He transmigrates into an ordinary new recruit in a border defense division in 1980. He has top-tier physical abilities, advanced tactical skills, sharp battlefield instincts, decisive ruthlessness, and a protective streak toward his own people. He understands battlefield survival, medicine, mine clearance, and sniping, and excels at individual combat, squad command, position defense, and infiltration behind enemy lines.
