Summary
Highlights
Changsheng uses his new system to master spearfishing, providing his family with a plentiful supply of fish which he sells in the market. He also develops a skill for refining coarse salt into fine salt, seeing an opportunity to improve their quality of life. This newfound ability brings stability but also draws unwanted attention.
The protagonist transmigrates into the body of Li Changsheng, who is severely ill. His sister-in-law, Yuelian, cares for him despite their poverty. He discovers a 'Labor System' that grants him experience points and attribute upgrades through physical labor like chopping wood, allowing him to quickly recover and grow stronger.
The villagers notice Changsheng's success, and two men attempt to steal his 'fishing technique' and abduct Yuelian. Changsheng, now stronger from his skill upgrades, easily defeats and kills them, forcing him and Yuelian to bury the bodies and rely on the villagers' silence. This event leads to a deeper bond between Changsheng and Yuelian, as he proposes to marry her to formally protect her.
News of the bandit killings reaches higher authorities within the Black Wolf Stronghold, causing Changsheng and Yuelian to flee their village to Yangcheng. In the city, Changsheng reveals his refined salt business to a merchant, Mr. Mo, securing a profitable partnership. He also acquires martial arts manuals to further enhance his strength.
Changsheng discovers the high price of sugar and, using his system, develops a sugar-making skill. He rents a shop and establishes "Changyue Sugar Shop" with Yuelian. The shop quickly becomes successful due to its affordable and high-quality sugar, providing a stable income and a strong financial foundation.
To protect his booming business and family, Changsheng decides to gain official backing by joining the local government (yamen) as a constable under Officer Xu Ya. He demonstrates remarkable detective skills by using fingerprint analysis and geographical mapping to quickly solve a serial 'flower thief' case, earning him immediate recognition and merit points to buy more powerful martial arts techniques.
Changsheng learns about the growing instability of the Great Qi Dynasty and the increasing threat of the White Dragon Cult. He uses his wealth to purchase Xuan-level cultivation techniques, including the highly sought-after Nine Yang Technique, rapidly increasing his combat abilities and longevity. His advanced skills impress even high-ranking officials within the yamen.
Officer Xu and Changsheng use Changyue Sugar Shop as bait to expose a powerful family, the Liu family, involved in robberies. Changsheng is promoted to head constable, cementing his position and influence. He uncovers deeper conspiracies, including the Cheng family's collusion with the White Dragon Cult to exploit a Xuan Iron mine.
The White Dragon Cult launches a full-scale attack on Yangcheng. Changsheng, now a powerful martial artist, leads the defense alongside Officer Xu. He encounters Mo Yun, a disciple of the Sunset Sword Sect, who recognizes his (and Yuelian's) spiritual roots, offering them a chance to join the sect. Changsheng accepts, after securing a promise that Mo Yun will help him settle his remaining grievances with the forces threatening Yangcheng.
Changsheng, with the backing of the Sunset Sword Sect disciples, decisively defeats the White Dragon Cult and the corrupt Cheng family. Yangcheng is saved, and Changsheng achieves the fame he desired. He reaffirms his commitment to Yuelian and, with their new opportunities to cultivate within an immortal sect, they look forward to a peaceful and powerful future together, free from the worries of the chaotic times.