In front of the class, Jang-Geum confesses to the lecturer that because she was too proud and too sure of her skills she was unable to diagnose the patient like Shin-Bi did. The lecturer replies he is still not sure whether or not Jang-Geum really understands what it takes to be a medicine worker. The lecturer gives the students another examination. They’re asked to write down what they know about using medicines. After reading the tests, the lecturer states the same ingredient can be both medicine and poison to patients, depending on the illness each patient suffers from, so a medicine worker must be detailed like Shin-Bi to correctly diagnose the illness or else the patient may become poisoned by the medicine.
The lecturer continues to be hard on Jang-Geum. Shin-Bi arrives to comfort Jang-Geum saying though he’s harsh with Jang-Geum but he cares about her as student. Shin-Bi tells Jang-Geum she was extremely sick as a child, then a doctor cured her, and when she told the doctor she wanted to return his favor he told her to give back to the world, so Shin-Bi decided to become a medicine woman.
The maids go through rigorous training between hands-on intership and reading of literatures. Shin-Bi tells Jang-Geum she thinks Jang-Geum will end up in the internal medicine department, as it’s the most challenging and prestigious department that in charge of taking care of the Royal family.