In the dark alleys of Jiangcheng with flashing neon lights, young Lin Feng used scavenging as his armor and the smell of traditional Chinese medicine as his shield to protect his grandmother on the sick bed. When the shadow of campus bullying spreads to the bottom line of survival, he clutches the sharpened glass shards and cuts a bloody path through the annotations of "The Art of War". From Scar strong's dead-end deal to the arms mystery of the Shadow Society, he uses resourcefulness as his edge and forbearance as his sheath to piece together the truth in the cracks of gang wars - the fangs of the Nightingale organization have long pierced the heart of the city. When his brother's blood dyed the warehouse floor red, and when his grandmother's medicine jar overturned amidst the sound of police sirens, he finally understood: the so-called dark blade is not for killing, but for allowing more people to live in the sun. This is a story about redemption and revenge, as well as a war to protect the light in the darkness.
