A Guide to Benefiting the World with Medicinal Herbs from Another World

Shen Jiang is a young woman who inherited her grandmother's traditional Chinese medicine clinic, Mingxintang, in Nanze City. The clinic has built a strong reputation for using high-quality authentic herbs, but this success has attracted envy from competitors. The narrative begins with Shen Jiang returning to the clinic to find it ransacked and her grandmother lying in a pool of blood after a violent confrontation with a man named Shan Guosheng. The police have not yet apprehended the suspect, and the public narrative has turned against Mingxintang due to online manipulation by rivals. Shen Jiang faces financial ruin and the potential loss of her family's legacy as she prepares to sell the clinic.

While cleaning the devastated clinic, Shen Jiang is pulled through a mysterious golden door that appears in her home. She transmigrates to a different world, finding herself in a cavernous lair dominated by a massive black dragon named Godwin Westzer. Initially terrified, Shen Jiang attempts to sneak out but is discovered. The dragon, who possesses immense magical power and a hoard of treasures, pins her down. However, he finds himself unable to kill her, as she possesses a mysterious resurrection ability that restores her to life whenever she dies. Confused and frustrated by this anomaly, Godwin decides to keep her as a follower rather than destroy her.

Shen Jiang, desperate to survive, claims to be a devoted admirer of the dragon. Godwin, suspicious of her motives, assigns her a seemingly impossible task: clear the weeds from the mountain surrounding his lair. Upon emerging, Shen Jiang discovers that the "weeds" are actually rare and valuable medicinal herbs, including Cistanche deserticola and Sanqi, growing in abundance. Recognizing the opportunity, she works tirelessly to clear the area, gathering the herbs while avoiding the dragon's traps. Her expertise in traditional Chinese medicine allows her to identify and harvest the plants efficiently, despite the physical toll on her hands.

After spending hours working, Shen Jiang returns through the golden door to her own world, bringing the harvested herbs with her. She discovers that only a few hours have passed in her timeline. Using the fresh Sanqi, she treats her injured hands, which heal miraculously fast, revealing the superior potency of the herbs from the dragon's world. Meanwhile, she receives a call from a buyer's assistant, Mr. Wang, who reveals that the buyer is Su Xingran, a key character from a novel Shen Jiang dreamed about the previous night. The dream had depicted a tragic future where Shen Jiang and her grandmother suffer due to the schemes of Su Xingran and his sister, Su Qing.

Shen Jiang realizes that her dream was a vision of a possible future tied to a fictional narrative world. She learns from Officer Zhang that the suspect, Shan Guosheng, has been arrested. His father, Shan Gui, claimed that the prescription from Mingxintang caused his kidney failure. Shen Jiang reviews the medical records and finds a crucial note indicating that the patient refused to have the medicine prepared by the clinic and instead took the prescription to his own herbal shop. She suspects that the patient's condition resulted from counterfeit or inferior herbs prepared elsewhere, rather than any error by her grandmother.

The core conflict shifts from survival against the dragon to clearing her grandmother's name and exposing the conspiracy behind the medical dispute. Shen Jiang understands that the public opinion against Mingxintang was orchestrated by competitors who used Shan Guosheng as a pawn. With the evidence from the medical records and the healing properties of the herbs from the other world, she begins to formulate a plan to fight back. The story establishes a dual-world dynamic where Shen Jiang uses resources from the dragon's realm to solve problems in her own, setting the stage for her to reclaim her family's reputation and protect her grandmother.