The story begins with the war in Blackstone Mountain. Li Che, armed with the Tang sword map and sword forging skills left behind by his father, led the remnants of the Zhenxi Army to resist the Tibetan invasion. From sharpening blades on black stones, to dangerous battles in yellow sand at night, to robbing food in glaciers, and setting up ambushes in canyons, he relied on the power of the Tang sword to unite with his soldiers and repeatedly defeat powerful enemies. After returning to Beijing, he reopened the Li family knife workshop and passed on the skills of sword forging and the belief in guardianship. He also used the Tang sword as a link to promote the alliance between the Tang Dynasty and the Uighurs, making the sword a symbol of peace.
The full text not only depicts the battlefield duel with swords and shadows, but also conveys the original intention of "the sword is for defense, not for killing". In the cold light of the Tang sword and the temperature of the fire, it shows the iron-blooded responsibility and craftsmanship of the soldiers of the Tang Dynasty, and composes a passionate song to protect the mountains and rivers and inherit civilization.
