10 timestamped notes explaining the Korean cultural context in this episode — customs, idioms, food, honorifics, and history, at the moment each appears on screen. These notes discuss events across the whole episode. To see them revealed scene-by-scene as you watch, use the episode page to find an airing.
At a royal birthday banquet (진연, jinyeon), it was customary for the Crown Prince — the highest-ranking person after the king and queen — to present the first ceremonial cup of wine to the birthday honoree. Having that seat empty is a pointed reminder to everyone present that the palace has no heir occupying that role.
When the queen dowager orders Ikhang-gun's eldest son, Inha-gun, to present the birthday cup in the Crown Prince's place, it is a very public signal. In Joseon court politics, being chosen to perform a ritual act for the king's family could hint at favor — and potential candidacy for succession. The other nobles watching would understand the implication immediately.
벽조목 (byeokjomok) is wood from a jujube tree (대추나무) that has been split by a lightning strike. In Korean folk belief, lightning carries powerful yang energy capable of repelling evil spirits, so wood scarred by it was used to carve protective talismans and ritual tools. Gu-cheon treats a piece of it as a precious weapon — harder to obtain inside a palace than you might expect.
A 배냇저고리 (baenaet-jeogori) is the tiny first robe sewn for a baby, traditionally made by the mother before the birth. In folk belief it carries the child's first breath and the mother's deepest wishes, giving it strong spiritual power. That a murdered court lady poured her love into one she never got to use makes it both heartbreaking and, in this drama's logic, the perfect vessel to channel and weaken her grudge.
무수리 (musuri) were the lowest-ranking women in the Joseon royal palace — they handled menial tasks like fetching water and cleaning. The queen dowager's contempt for the murdered court lady hinges entirely on her having started as a musuri, because Joseon society ranked people rigidly by birth. That someone of this status caught the late king's romantic attention was, in the queen dowager's eyes, a humiliation that demanded erasure.
한과 (hangwa) are traditional Korean sweets made from honey, grain flour, and various natural ingredients — they were a prestige gift presented at royal birthdays and ceremonies. Sang-gang has recreated the exact hangwa her mother received from the palace the day before she died, including whatever was hidden inside, and offers it to the queen dowager as a quiet dare to eat what she served others.
승은 (seung-eun) literally means 'receiving the royal grace' — a palace term for a king spending the night with a court lady. A woman who received the king's favor was elevated to a special rank and given the title 승은상궁 (seung-eun sanggung). This was one of the only paths by which a low-born palace woman could gain power, which is exactly why the queen dowager found it so threatening.
고신 (gosin) refers to the official judicial torture used in Joseon to extract confessions — typically beating the shins with heavy rods. When the queen dowager shouts that she 'gosin-ed' the court lady, she is admitting to ordering an illegal, extrajudicial version of it against a pregnant woman, which is also a confession to causing the death of royal blood. Sang-gang has maneuvered her into saying this aloud in front of witnesses.
양기 (yanggi) is the active, life-giving force in the Korean (and broader East Asian) yin-yang framework — associated with warmth, daylight, and living bodies. In this drama's supernatural logic, a living shaman-descended person like Gu-cheon carries yanggi that spirits and shadow-creatures cannot generate themselves. Sharing some of it with the injured spirit creature is framed as a real physical cost to him, not just a kind gesture.
세자 (seja) means Crown Prince — the officially designated heir to the throne. In Joseon, only the king could designate a seja, and the position came with its own palace compound (동궁, donggung). The drama has been building the mystery around multiple princes dying before they could inherit; Sang-gang is now pushing her father to say out loud how each one actually died, suspecting the ghost story was used to cover something else.