In the steel jungle where neon lights and sword energy dance together, delivery rider Lu Xiu takes a fatal order - to deliver a biting bronze sword on a rainy night. When he found the "Secret Letter from Qian Ji Pavilion" attached to the incubator, the navigation on his mobile phone suddenly jumped to "Nine Nether Terrain Map", and the customer who received the five-star rating turned out to be his mother who had been buried in the cemetery for seven years.
Modern cities hide thousands of years of history. The doorman at the express station is a master of blacksmithing, the white-collar workers in the office building can make ice soul silver needles, and even the loudspeaker of the urban management team leader has the lion's roar skill hidden inside. Lu Xiu was holding the rusty long sword handed down from his ancestors, and the bronze lines emerging on his right arm were swallowing flesh and blood inch by inch - this was the "Xuan Vein Rusty Bone" unique to the Lu family bloodline, which was both the general outline of the world's martial arts and a reminder of the impermanence of life.
When the takeaway battery cart transforms into a stainless steel armor, when the mother's relics open the Fengdu Ghost City, when the Spring and Autumn Sword Tomb is dug underground under the headquarters of the technology giant... This world positioned by GPS is playing out the most absurd life and death situation. And Lu Xiu must use a rusty take-out box to receive the pursuit order from the three mountains and five mountains, the soul request message from the Rebirth Inn, and the God-killing Forge left to the descendants of the bloodline by the master swordsmith Lu Ye 800 years ago.
On one side is the order-delivery countdown urged by the algorithm, and on the other side is the backlash of martial arts that is corroded into the bones. This deliveryman, who is judged by modern medical science to have "permanent atrophy of his right arm", will reveal the most horrifying truth before the rust penetrates his heart: the so-called rivers and lakes are nothing but rust invisible to mortals.
