Rank And Responsibility. Or: The Hairpin Scene from Jinshi's POV.
Be warned now about the consequences of choosing to do an English Lit degree - you end up doing lit crit for fun. With that in mind, let's break down the hairpin scene at the end of Covert Operations (Episode 5). Mild spoilers for Jinshi's arc are below.
While this moment does kick off the romantic subplot, with all the implications that giving Maomao the hairpin out of his own hair has, I would argue that this is not the moment Jinshi realizes he's in love with Maomao. Instead, from his point of view, this scene demonstrates how Jinshi handles failure.
Holding Power In An Open Palm
This is still very early in the story. Our first hint to Jinshi's true rank does come in this scene, but for now we know him as the manager of the Rear Palace. For the three thousand people who live and work there, for all intents and purposes, Jinshi is the highest authority they will encounter. He literally has the power of life and death over them, either directly in the case of the servants and eunuchs, or in the case of the consorts, his word to the Emperor directly can serve the same purpose. We also see Jinshi use this power early on - he's not just there to keep order, but also to test the consorts' loyalties and virtue. We never see what happens to the lower-ranked consort who attempted to invite Jinshi back to her room, but at the very least that report ensures that her already small chance of the Emperor choosing her as a potential mother of the nation is utterly cut off - and if she doesn't bear children, she will be discarded.
We also know that Jinshi will not hesitate to order corporal punishment if he views it necessary - for example, when Maomao discovers that the toxic face powder is still being used by Consort Lihua's ladies in waiting, she mentions in the aftermath that the eunuch who failed to recover the powder was flogged, while the lady in waiting who hid the powder is put in solitary confinement. These are brutal punishments - and if we consider the historical inspirations, these are also very restrained consequences. For hiding an item that caused the death of the prince (unfortunately, the more valuable child) and has put the life of one of the Emperor's favored High Consorts in danger, Jinshi would be utterly within his rights to order executions. If ignorance is a sin, ignorance in the face of knowledge is a greater one.
Microcosm of Li
For all that Jinshi holds his power lightly, he also takes the responsibility that power bestows upon him quite seriously. It's worth noting that Jinshi takes over governing the Rear Palace shortly after Maomao's service contract is purchased. (Remember, Xiaolan talks about the "beautiful, new eunuch that's been posted to the central courtyard," which tells us that Jinshi has not been in the Rear Palace long enough to become a fixture - he's an object of speculation and admiration from episode 1).
In context it's clear that, with the birth of two Imperial children, his job is to ensure the survival of the Imperial line and investigate why children of the Emperor are dying consistently in one of the wealthiest and safest places in the entire empire. We're shown him running in between Lady Lihua and Lady Gyokuyou to ensure that their very sick children are being seen to properly, investigating what could be causing it, while also managing tensions as rumors about the Emperor's children being cursed begin to spread and outright accusations of sorcery are being thrown between consorts. While the audience might immediately scoff along with Maomao at the idea of one consort cursing another, if Maomao hadn't found the cause of death, those types of accusations followed by Lady Lihua's and Princess Lingli's inevitable deaths could have ended with Lady Gyokuyou's execution.
The Rear Palace is a reflection of the nation as a whole. No Imperial heirs plus the deaths of two High Consorts with various foreign and domestic political ties had the potential to thrust the entire nation into chaos. Jinshi's choices have very real consequences, so when Maomao discovers what the true cause of death is and sends her warning, Jinshi looks at Maomao and doesn't see a person. He sees a "perfect pawn." A tool, one with talents that have ensured that at least one Imperial child has survived and providing a rational explanation why these children have died so that it can be prevented from happening again - and a skill set that can be turned to preventing any more shenanigans in the Rear Palace that could threaten the empire's foundation.
And, as Gaoshun points out, in the beginning of the hairpin scene, she is a toy. Maomao amuses Jinshi up until this point.
For all that Jinshi is shown wielding power with a light hand and a responsible mindset, it literally doesn't occur to him that the people working in the rear palace have stories - some tragic - about how they came to be there. They are resources to be used as befits the Emperor's (and therefore the nation's) need.
Hidden Beauty
When Maomao turns around and Jinshi doesn't recognize her until she speaks, he's shocked. He thought he knew exactly who and what this girl was - ugly and unremarkable, except for her intellectual brilliance and the challenge in managing her by other means than empty compliments and smiles. He attempts to recover and assumes that she is enhancing her looks - and is shocked again when he realizes that the face Maomao has presented to him so far is a protective mask against attracting attention. In a world where beauty is both a currency and a tool that others covet, Jinshi doesn't understand why Maomao would deliberately devalue herself like that. So she tells him.
This is the moment Maomao becomes a person to Jinshi.
Not a toy, not a pawn. Someone who has been ripped from her home and her life illegally and sold off. It's in this moment that Jinshi is forced to confront the ugly side of the society he lives in, people who would rape Maomao out of pure convenience or just take a "borderline marketable" girl off the street in order to get extra drinking money.
Worse, Jinshi is complicit in Maomao's captivity. The Rear Palace has bought her contract - and as the manager of the Rear Palace, Jinshi is responsible for everything that happens within its' walls. The fact that Jinshi does not personally oversee service contracts is irrelevant. The buck stops with him. If the Matron of the Serving Women or whoever is below her is buying these contracts without checking their sources, that is Jinshi's fault because he has allowed a lax enough system to flourish. He has failed to govern this microcosm of the nation wisely, with thought for the welfare of the least powerful among his people. Worse, he has failed to even notice the problem - Maomao may say she's angry about having been kidnapped and sold, but she doesn't react in a way that indicates anger. Instead, she's resigned. Yes, what happened to her was wrong and she's angry about it, but there's literally nothing she or Jinshi can do.
Or Is There?
Jinshi offers Maomao two apologies, the first of which is our first hint to his true status. "I'm sorry we couldn't police them better." Maomao immediately blows off this apology - she points out that there's no way Jinshi should have known and has a very "all's well that ends well" attitude about her situation - her contract will be up eventually and in the meantime she's managed to land in a fulfilling role. Essentially Maomao is telling Jinshi that this apology is not his to make - he's overstepping his responsibility. And, if Jinshi were simply the manager of the Rear Palace, she would be right. It's his job to ensure that the Rear Palace is properly staffed, not to regulate that all contracts comply with the law.
Jinshi apologizes again. This time, he offers no other context. He doesn't accept Maomao's absolution of responsibility - because he knows (even if we, the audience, don't) otherwise. It can certainly be read as Jinshi refusing to accept easy absolution, and the rest of those witnessing the scene, apart from Gaoshun, certainly take it that way.
Instead, he takes the hair stick from his own hair and places it in Maomao's. Their entire relationship has just been upended; Maomao is a person who has been gravely wronged and it is Jinshi's responsibility to begin to make it right. Aside from the personal implications of giving her the hairpin (and the faint blush on his face makes it clear that he's aware of them), it is a form of restitution. There is an unspoken social contract Jinshi is offering that Maomao does not understand in the slightest. It never occurs to her that Jinshi would do something for her with no thought of what he would receive in return, because of the difference in their social ranks. But, from Jinshi's perspective, that social difference is the point. He has failed her and, as the person of higher rank, it is his responsibility to do what is within his power to begin to remedy the situation in front of him.
And, of course, in that moment he sees Maomao in a new light, the other meaning of gifting her his hairpin has fertile ground to take root in Jinshi's mind.
