Maomao is 17 years old when The Apothecary Diaries begins, and she becomes 18 later in Season 1. That is the clean, canon-friendly answer most readers want. The confusion happens because the series uses court-era age conventions, time passes without always showing birthdays, and Maomao’s job responsibilities make her feel older than she is.
At HariManga, this is one of the most searched questions whenever new viewers realize Maomao is solving poison cases, decoding palace politics, and handling medical emergencies with the calm of an experienced adult.
The twist is that Maomao’s maturity is not a signal that she is older. It is a signal that she has survived a harsh environment and learned to stay useful.
How Old Is Maomao Apothecary Diaries? Quick answer for skimmers

- Maomao’s real age at the start: 17
- Maomao’s real age later in Season 1: 18
- Why people argue online: age conventions, time progression, and “mature behavior” that makes her feel older
If you need one line that works everywhere:
Maomao is 17 when The Apothecary Diaries begins and turns 18 later in Season 1.
Why Maomao’s age is a common question
Maomao is written in a way that can trick modern audiences into assuming she is older. She is not naive, she is not sheltered, and she does not behave like a typical teenage heroine in romance-driven stories. Instead, she behaves like someone who has already learned the cost of mistakes.
Three factors create the age confusion:
1) Competence makes her feel older
Maomao’s skill set is not “teen prodigy” in a shiny way. It is practical competence built from exposure to sickness, pharmaceuticals, dangerous clients, and human hypocrisy. She reads people quickly. She stays emotionally contained. She does not panic easily. To many viewers, that looks like a person in her 20s.
2) The setting’s social rules compress “adulthood”
In palace fiction, “adult roles” can begin earlier than they do in modern life. Characters may work, serve, or marry young. So when you see Maomao treated like labor, not like a child, it can feel like the story is coding her as older. In reality, the setting treats youth differently.
3) The story does not constantly restate ages
The Apothecary Diaries is not an age-forward narrative. It does not pause to remind you of exact ages every episode. Time passes through seasons, tasks, and political cycles, so viewers forget the initial number and begin guessing based on vibes.
Maomao’s real age at the beginning of the story

At the start of The Apothecary Diaries, Maomao is 17.
This aligns with the way the story positions her:
- young enough to be dismissed by elites
- old enough to be exploited as labor
- emotionally detached enough to survive dangerous attention
Maomao’s age also matches a key part of her character design: she is not meant to be powerful because she is older. She is powerful because she is observant, trained, and stubbornly rational.
Why “17” fits Maomao’s background
Maomao grew up in an environment where knowledge had immediate value and mistakes had immediate costs. She is familiar with sickness, herbs, toxins, and treatment because those things were part of everyday survival. She did not have the luxury of being a carefree teenager, so she does not read like one.
This is important: Maomao’s maturity is not a signal of age, it is a signal of lived experience.
How Maomao turns 18 later in Season 1
As Season 1 progresses, time moves forward, and Maomao becomes 18 later in the season.
Unlike modern school-life anime where time progression is obvious through semesters and birthdays, The Apothecary Diaries uses subtler markers:
- changes in tasks and postings
- shifting palace dynamics
- seasonal illness patterns
- progression of ongoing mysteries
Because the story is focused on cases and politics, the age change can feel like it comes out of nowhere. But it is simply the timeline moving and Maomao aging normally.
Does the show explicitly show her birthday?
Not in the typical celebratory way. The series uses a tone where personal milestones are less important than survival and power. Maomao is not the kind of character who announces her birthday for attention. So the age change is more like a factual update than a narrative event.
Age conventions: why some fans report different numbers
A large part of the fandom confusion comes from how age is handled in pre-modern settings. In traditional age-counting systems often referenced in historical fiction:
- people may be considered “one” at birth
- people may “age up” with the new year rather than on birthdays
This can create “off-by-one” style confusion for international audiences. Someone will hear “18” and assume modern age, while another will interpret it through a different counting style. The result is inconsistent answers that look like contradictions.
The practical solution as a writer is straightforward:
- state her real age at story start
- state her age later in Season 1
- note that age conventions and time progression can make numbers look inconsistent in casual discussion
That is enough to stop most reader confusion.
How old is Maomao compared to Jinshi?

This is the next question that usually follows.
In the early story period:
- Maomao starts at 17 and becomes 18 later in Season 1
- Jinshi starts at 18 and becomes 19 later in Season 1
So their true age gap is roughly one year.
Why the gap feels bigger in the story
Even though the true ages are close, two things amplify the perceived distance:
1) Jinshi’s public persona
Jinshi publicly presents himself as 24, which makes Maomao and others initially perceive him as much older.
2) Rank and power
Jinshi’s position creates a huge social gap. Even if they are close in age biologically, he controls access, information, and consequences. That authority changes how the relationship dynamic feels.
So if you are trying to explain the “age gap vibe,” you can say:
“The true age gap is small, but the social gap is large.”
Why Maomao feels older than 17
Maomao is one of those characters whose personality compresses her youth. Several writing choices contribute to this.
1) Emotional restraint
Maomao rarely performs emotion to be liked. She suppresses reactions, avoids attention, and often speaks with blunt logic. That reads as adult-like.
2) Work-first survival mindset
Her worldview is practical: solve the problem, reduce risk, avoid exposure. Teen characters in many series pursue identity and romance. Maomao pursues safety and autonomy.
3) Medical and toxicology competence
Knowledge that involves life-and-death decisions automatically makes a character feel older. When you watch someone evaluate a poison or diagnose a pattern in symptoms, you associate that with professional adults.
4) Cynicism without melodrama
Maomao is not cynical in a dramatic “I hate the world” way. She is cynical in a quiet “I know what people do when nobody is watching” way. That kind of cynicism is usually learned through experience, so audiences often assume extra years.
Maomao’s age in different versions: anime, manga, and light novel
Most fans meet Maomao through one of three formats:
- anime adaptation
- manga adaptation
- light novel
In general, Maomao’s age is consistent across formats because it is part of her baseline character profile. Where differences sometimes appear is not her age, but:
- how quickly time feels like it passes
- which scenes emphasize her youth or her professionalism
- how much internal narration clarifies her mindset
The light novel can make her feel even more mature because you spend more time in her internal logic, while manga and anime can emphasize facial expressions and comedic timing differently.
Why age matters for understanding Maomao’s character
Some people treat age as trivia. In The Apothecary Diaries, age changes how you interpret Maomao’s core traits.
1) Her competence becomes more impressive
If Maomao were 25, her calm professionalism would be expected. At 17, it becomes a story about survival-driven excellence.
2) Her caution becomes more rational
Maomao’s avoidance of attention is not shyness. It is strategy. She understands that in the palace, attention is danger. When you remember she is still a teenager, her strategy reads as even more essential.
3) Her relationships feel differently weighted
Maomao is young, but she is not written as innocent. That combination creates tension: she can read people, yet she is still vulnerable to the palace’s power structures. Her age highlights the imbalance between her intelligence and her social position.
A clear way to state Maomao’s age in your article
If you want a copy-friendly phrasing that prevents arguments:
Maomao is 17 at the beginning of The Apothecary Diaries and turns 18 later in Season 1. Some viewers get confused because time passes subtly and the setting uses traditional age conventions, but her true age is straightforward.
This gives the number, then preempts the confusion in one sentence.
FAQ
How old is Maomao in The Apothecary Diaries?
Maomao is 17 at the beginning and becomes 18 later in Season 1.
Why do some people say Maomao is 18 from the start?
Because Season 1 covers enough time that her age updates, and traditional age conventions can make numbers look off by one in casual discussion.
Is Maomao younger than Jinshi?
Yes. In the early story period, Maomao is about one year younger than Jinshi in true age.
Does Maomao’s age change later in the story?
Yes. She ages normally as the timeline progresses, even if the story does not always highlight birthdays.
Why does Maomao feel older than 17?
Because she is written as highly competent, emotionally restrained, and survival-focused, with medical and toxicology knowledge that audiences associate with adults.
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