He has delivered packages for three years. No one knows how many people he has sent to their deaths. Yun City's coldest courier used to be its strongest soldier. Every time he uses his ability, his organs age a little more. White hair, coughing blood, a wheelchair, scars. It doesn't matter. Once he delivers this package, the world will change. Zhao Shanhe is dead. Before he died, he said only two words: Langya. He doesn't know who Langya is, but he remembers the codename. Three years ago, that was the codename that got him forcibly discharged from the special forces. He went to find one of Zhao Shanhe's informants, but all he found was a torn-up notebook. Written in it were two words: Hua family. His surname isn't Lin. It's Hua. But he has never known what that name means.