The wind and sand at the frontier can't take away the pride, and the trembling of the bowstring hides a half-life legend. He was Li Guang, the flying general who made the Xiongnu fearful. He had joined the army on horseback since he was young. He had guarded the northern border for decades with his unique skills in riding and shooting. He fought in more than seventy battles and repeatedly defeated the Huns' cavalry. However, due to the twists of fate, he could not be named a prince. From the fierce battle at Yanmen to the attack in Mobei, he established himself as a loyal man and became famous for his bravery. The soldiers under his command were willing to die for him, and the barbarian cavalry outside the fortress did not dare to approach his camp. This article will set aside the smoke of history, restore the iron-blooded journey of this famous general of the Han Dynasty, and see how he defended his family and country amidst the light of swords and the shadow of his sword, and wrote a hero's tragic song amid merits, demerits, honors and disgrace.