This is the spy thriller that I will compare all other Republican period spy thrillers to going forward. It is that good. Each of the engrossing 61 episodes just flew by and I haven't been able to watch anything else since. I put this off for a long time due to poor reviews of the female lead's performance, which unfortunately is beyond dreadful. The rest of the cast however, is so phenomenal that they more than make up for it, to the point that the rating simply does not do justice to this drama.

Set in 1940s Shanghai during the Wang Regime (Japanese puppet government), Chen Shen works for his best friend Bi Zhongliang who heads up the Special Operations Division. At surface, he is an indolent playboy, an aspiring barber until he was propelled into a position of favor and authority for saving Bi Zhongliang's life. In reality, he is a double agent loyal to the CPC. Things get complicated when his former student and true love Xu Bicheng and her husband Tang Shanhai are assigned to the Special Operations Division. The paranoid Bi Zhongliang eyes them with suspicion because Bicheng is his superior and rival Li Moqun's niece. He is already under growing pressure from both Li Moqun and their ultimate superiors, the Japanese for failing to capture the notorious communist spy Sparrow.

The overarching plot of this drama is rather simple and clean. The main communist and nationalist protagonists have just one mission; to steal the Return to Zero plan hidden within the Special Operations Division. The antagonists are aware of this and use this knowledge to try to trap them into revealing themselves and to capture Sparrow.  The subplots and unpredictable way the storyline unravels with many twists along the way are largely driven by the characters as they react to stressful life and death situations that force perilous split second decisions. One of the weaknesses in storytelling is that the writers resort to coincidences and sheer luck a little bit too often to facilitate twists or bail the main protagonists out of tricky situations. Nonetheless it all comes together to deliver an intense aura of suspense that builds towards the thrill of unexpected victories, shocking betrayals, blindsiding plot twists and sudden death.

Chen Shen is the perfect spook - he is on the one hand an innocuous ladies man; a charming, stylish teetotaler who can't even bring himself to fire a gun. Yet he manipulates Bi Zhongliang masterfully; ruthlessly stoking and soothing his insecurities at the same time. This is by far the most fascinating relationship in the drama. Although he mistrusts Chen Shen, Bi Zhongliang is also touchingly sincere and protective of him. Chen Shen's feelings towards him are complex; they have an unusual bromance that pulls them together regardless of the fact they are on opposite sides. Chen Shen is not only the most intriguing character in the drama, he is also considerably more ruthless and manipulative than the main antagonists. This is by far Li Yifeng's most memorable role to date, well complemented by Zhang Luyi's disarming portrayal of Bi Zhongliang. The dialogue is sophisticated, pointed, witty and laced with sarcasm and dark humor that often relieves suspenseful tension with laugh out loud moments and encapsulates the complex character dynamics.

Even though I am a huge sucker for morally ambiguous characters like Chen Shen, there are almost too many moments where Zhang Ruoyan's Tang Shanhai eclipses him. And it is not just because he looks so incredibly scrumptious in a suit. Too often the second male lead is dumbed down to elevate the male lead. While it is true that Tang Shanhai is not quite the consummate spy that Chen Shen is, Zhang Ruoyun pulls this off without portraying Tang Shanhai as less intelligent; just a tad less ruthless, a tad less composed and a lot more heart. He is thrust into many parallel situations with Chen Shen but the way he processes and reacts to the situation, how he is clumsier at manipulation, how his remorse is more visible; makes it clear that he is a less hardened spy. His relationship with Chen Shen evolves from rivalry and distrust into mutual respect and a grudging friendship that compels the two to work together when their interests align. The enemy of my enemy is my friend is a recurring motivator in this drama that pits multiple characters alternately with and against each other.

The female lead, Xu Bicheng is by far the drama's weakest link. Unlike many, I don't think the writing is the problem; on the contrary I find the character to be one of the best written, most complex female roles out there. Bicheng is a flawed character; stubborn to the point of recklessness with a bleeding heart for lost causes who wears her heart on her sleeve. She is also often underestimated, can be very cunning, is a fantastic liar when cornered and is able to manipulate both Chen Shen, Tang Shanhai and Tao Dachun into doing what she wants and her character undergoes tremendous growth. None of these positive aspects are conveyed by the acting because Zhou Dongyu is a very limited actress who just lazily recycles the same four boring, mopey, terrified and pitiful expressions throughout the drama. The only things she does well is child ugly cry and child uninhibited smile from the heart. Which is wonderful... if she were playing a child. In this role, it is at odds with the role of a woman in her mid twenties, a spy and a married woman for crying out loud. It is also obvious no one ever told her it does not suit her naturally rather mature facial features and incredibly grown up styling in this drama. She fails so badly at projecting that je ne said quoi that has every man fall in love with her that its not even fitting to call her a Mary Sue even though she does need constant rescuing. I could not empathize with her at all and couldn't care less what happens to her.

Kan Qingzi was robbed - her Li Xiaonan stole the show and she really deserves top billing as female lead in this show. Her performance puts Zhou Dongyu's to shame even though the character is at surface, less complex and interesting. I normally loathe ditzy, lame characters like Li Xiaonan who are capable of loving wholeheartedly even when it is not reciprocated. But wow, she made me laugh, she made me cry, she made me respect her single-mindedness, I was 100 percent behind her. And that is what a good actor does, it is what every actor in this exceptional cast other than Zhou Dongyu managed to do - impress me with their acting and make me empathize with them even when they play dark or weak characters. Geez even Yin Zheng or especially Yin Zheng managed to make me empathize with his portrayal of the rabid, vicious, cruel and dangerous Su Sanxing.

A criticism of this drama is that love seems to have overshadowed the spy story; that the unrequited love trope is perhaps overused in this drama. While there is some truth to that, this is still very much a spy thriller that is chock full of excellent twists and turns. And the bigger point is that the unrequited love trope is used brilliantly to explore how each of the main characters bestows and responds to unrequited love in completely different ways. I normally approach Republican dramas with a stone cold heart - I go in pretty much expecting everyone to die it is just par for the course. In this one, too many characters still managed to steal my heart and made me bawl my eyes out. That said, the drama ends very fittingly after the final showdown.

My favorite line in the drama is Chen Shen's heartfelt "Please... don't tell anyone you were my student." This is by far the best Chinese spy thriller I have seen to date (August 2021). This is a 9.0 for me but I could easily rate it 9.5 were it not for the appalling execution of the female lead role.