This is a legend that spans half a century. From the desperate defense of Qingyunguan during the Anti-Japanese War, to the desperate fighting in the tunnels to resist U. S. Aggression and aid Korea, and then to the refusal to give up an inch of land on the snowy border between China and India, veteran Lu Yang used his life as a blade and faith as a shield to carve "protecting the country" into his bones and blood. Carrying the legacy of his comrades, he guarded the country from black hair to white hair, from plains to snowy areas, and witnessed the transformation of mountains and rivers from brokenness to peace, and the transformation of the country from weakness to strength. This is not only one person's iron-blooded journey, but also an epic of family and country written by a generation of soldiers with loyalty and sacrifice. (Note: The above content is only a fictional story, intended to depict the growth and life of the protagonist Lu Yang)