# Checkmate (民国大侦探)
**Checkmate** (民国大侦探, *Min Guo Da Zhen Tan*) is a 2022 Chinese Republican-era detective drama adapted from [Agatha Christie](https://www.edgepedia.org/agatha-christie)'s Hercule Poirot stories, the first authorized television adaptation of that series for Chinese-language regions. It ran for 24 episodes on iQiyi from August 10 to August 25, 2022, and was directed by Zhang Weike.[1](https://wiki.d-addicts.com/Checkmate) • [2](https://www.agathachristie.com/film-and-tv/checkmate)
| Key fact | Detail |
|---|---|
| Original title | 民国大侦探 (*Min Guo Da Zhen Tan*), English title Checkmate[1](https://wiki.d-addicts.com/Checkmate) |
| Basis | Agatha Christie's Hercule Poirot series; first authorized adaptation in Chinese-language regions[2](https://www.agathachristie.com/film-and-tv/checkmate) |
| Broadcast | iQiyi, August 10 to August 25, 2022, 24 episodes, Wednesday to Saturday at 20:00[1](https://wiki.d-addicts.com/Checkmate) |
| Setting | Republican-era China, mainly Harbin, around 1920[3](https://peschelpress.com/teresa-reviews-checkmate-2022-min-guo-da-zhen-tan/) |
| Structure | Eight cases, including Murder on the Orient Express, a richest-man manor murder, and a girls' school haunting[4](https://www.iqiyi.com/kszt/news2022081003.html) |
| Main cast | Hu Yitian (Situ Yan), Zhang Yunlong (Luo Shaochuan), Zhang Xinyu (Zhou Mowan), Xuan Yan (Jin Qiming), Shen Yujie (Zou Jingxuan)[5](https://www.iqiyi.com/a_2b6dx51k7o5.html) |
| Ratings | iQiyi 7.9/10 from about 185,000 raters; Douban 6.3/10 from about 27,000 raters (as of March 24, 2024)[6](https://wapbaike.baidu.com/item/%E6%B0%91%E5%9B%BD%E5%A4%A7%E4%BE%A6%E6%8E%A2/58451416?fromModule=tashuo-article_bottom-lemma) |
## Spoilers
### Premise and characters
The story follows Situ Yan (胡一天, played by [Hu Yitian](https://www.edgepedia.org/hu-yitian)), a young lawyer in Beiping who is dismissed after insisting on legal principle. In the opening case he prosecutes [Ma Shiying](https://www.edgepedia.org/ma-shiying) for a murder at a railway station, but the killer escapes punishment through his foreign nationality, which under the extraterritoriality of the period placed him beyond the reach of Chinese courts. Situ Yan then travels to Harbin to become a detective.[5](https://www.iqiyi.com/a_2b6dx51k7o5.html) • [7](https://www.jiemian.com/article/7925874.html)
In Harbin he meets Luo Shaochuan (骆少川, Zhang Yunlong), a straightforward police detective and the son of Harbin's richest man, and Zhou Mowan (周墨婉, Zhang Xinyu), a teacher who dares to love and hate and carries her own secrets; the finale reveals her double identity as Fang Huaijin (方怀瑾).[5](https://www.iqiyi.com/a_2b6dx51k7o5.html) • [1](https://wiki.d-addicts.com/Checkmate) They are joined by the journalist Jin Qiming (金启明, Xuan Yan) and the heiress Zou Jingxuan (邹静萱, [Shen Yujie](https://www.edgepedia.org/shen-yujie)), forming a five-person team that solves cases together.[2](https://www.agathachristie.com/film-and-tv/checkmate) The final episodes reveal that Jin Qiming is the hidden antagonist, X, who has orchestrated events from the [Orient Express](https://www.edgepedia.org/orient-express) case onward.[5](https://www.iqiyi.com/a_2b6dx51k7o5.html)
## The eight cases
The drama is built as a unit-case series: eight largely independent cases, each adapted from a Poirot story, connected by an overarching thread that runs through the whole series. The iQiyi press materials name the opening [Murder on the Orient Express](https://www.edgepedia.org/murder-on-the-orient-express) adaptation, a murder at a richest man's manor, and a haunting at a girls' school among the eight.[4](https://www.iqiyi.com/kszt/news2022081003.html) The licensed material comprised seven Poirot novels and one short story.[3](https://peschelpress.com/teresa-reviews-checkmate-2022-min-guo-da-zhen-tan/) Reviewers noted that the eight cases share one continuous storyline, so that the series holds together as a single work rather than a loose anthology.[6](https://wapbaike.baidu.com/item/%E6%B0%91%E5%9B%BD%E5%A4%A7%E4%BE%A6%E6%8E%A2/58451416?fromModule=tashuo-article_bottom-lemma)
## Adaptation and localization
Christie's original stories are set in Europe around the First World War, with the Belgian detective Poirot settling in England as a refugee. Checkmate moves the setting to Republican-era China (1912–1949), a period of unstable government, tangled power factions, and weakly enforced law, which gives the "Chinese Poirot" room to operate.[8](https://k.sina.cn/article_3840084769_e4e30b21001015yjs.html) Situ Yan keeps Poirot's careful reasoning, exceptional observational skill, and severe fastidiousness about cleanliness, while new companions such as Luo Shaochuan and the well-informed journalist Jin Qiming are added around him.[8](https://k.sina.cn/article_3840084769_e4e30b21001015yjs.html)
**Local detail.** The production worked local flavor into the scripts: regional foods such as douzhi and jiaoquan, a Western-food chef speaking Northeastern Mandarin, and background rhymes of the era. Western elements that remain, such as girls' schools, churches, and manors, are absorbed into Harbin's particular history of Russian influence.[8](https://k.sina.cn/article_3840084769_e4e30b21001015yjs.html) Each case also ends on a localized theme, such as the era and family in the first case or family relationships in the manor case, rather than simply reproducing the originals.[8](https://k.sina.cn/article_3840084769_e4e30b21001015yjs.html)
## Production and reception
The series was produced by iQiyi with Shengjin Picture as co-producer, through iQiyi's Qixi studio, and reassembled the lead team of the 2020 hit detective drama *My Roommate Is a Detective* ([民国奇探](https://www.edgepedia.org/my-roommate-is-a-detective)), with Hu Yitian and Zhang Yunlong paired again.[2](https://www.agathachristie.com/film-and-tv/checkmate) • [4](https://www.iqiyi.com/kszt/news2022081003.html) VIP members received two new episodes each Wednesday through Saturday at 20:00, with one free episode per day for non-members.[4](https://www.iqiyi.com/kszt/news2022081003.html)
**Commercial performance.** Pre-bookings on iQiyi exceeded 2.5 million before release. Within 24 hours of the first three episodes premiering, the platform's internal popularity score reached 7,919, one of the year's highest; the show later held first place on iQiyi's Biggest Jumper Chart, second on the Hottest Viewing Chart, and third on the Most Searched Chart, and ranked in the top five on independent ratings charts in China.[9](https://www.zespamedia.com/news_05092022.html)
**Critical reception.** Audience scores settled at 7.9/10 on iQiyi (about 185,000 raters) and 6.3/10 on Douban (about 27,000 raters) as of March 2024.[6](https://wapbaike.baidu.com/item/%E6%B0%91%E5%9B%BD%E5%A4%A7%E4%BE%A6%E6%8E%A2/58451416?fromModule=tashuo-article_bottom-lemma) Reviewers praised the localization and the ensemble portraits of Republican-era society, with the *Jiangnan Evening News* noting the tight pacing and the single thread linking the eight cases.[6](https://wapbaike.baidu.com/item/%E6%B0%91%E5%9B%BD%E5%A4%A7%E4%BE%A6%E6%8E%A2/58451416?fromModule=tashuo-article_bottom-lemma) [Criticism](https://www.edgepedia.org/criticism) centered on the choice of very familiar material: Murder on the Orient Express had already received five screen adaptations, so many viewers knew the solution in advance, and some critics felt the show simplified the deduction process while spending its energy on social themes behind the cases, leaving both strands underdeveloped.[8](https://k.sina.cn/article_3840084769_e4e30b21001015yjs.html) • [10](https://www.thepaper.cn/newsDetail_forward_19506181) A Phoenix Entertainment review judged the case-solving mechanical by comparison with the team's original 2020 drama.[11](https://ent.ifeng.com/c/8IiPOWsjQOx)
## References
1. [Checkmate, DramaWiki](https://wiki.d-addicts.com/Checkmate)
2. [Checkmate, Agatha Christie Ltd](https://www.agathachristie.com/film-and-tv/checkmate)
3. [Teresa Reviews Checkmate (2022), Peschel Press](https://peschelpress.com/teresa-reviews-checkmate-2022-min-guo-da-zhen-tan/)
4. [爱奇艺《民国大侦探》8月10日上线 推理解密八个单元案件](https://www.iqiyi.com/kszt/news2022081003.html)
5. [民国大侦探, iQiyi](https://www.iqiyi.com/a_2b6dx51k7o5.html)
6. [民国大侦探, 360百科](https://wapbaike.baidu.com/item/%E6%B0%91%E5%9B%BD%E5%A4%A7%E4%BE%A6%E6%8E%A2/58451416?fromModule=tashuo-article_bottom-lemma)
7. [《民国大侦探》：原作镣铐太沉重，改编难出新意, Jiemian News](https://www.jiemian.com/article/7925874.html)
8. [《民国大侦探》：民国双男主柯南，不好使了？, Sina Entertainment](https://k.sina.cn/article_3840084769_e4e30b21001015yjs.html)
9. [Checkmate Enjoys Top Ratings and Popularity Since Premier on iQiyi, Zespa Media](https://www.zespamedia.com/news_05092022.html)
10. [《民国大侦探》：民国双男主柯南，不好使了？, The Paper](https://www.thepaper.cn/newsDetail_forward_19506181)
11. [赶流程的剧本杀，《民国大侦探》还差点火候, Phoenix Entertainment](https://ent.ifeng.com/c/8IiPOWsjQOx)
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*Topic: Encyclopedia › Arts and culture › Screen and stage › Film and television › Series and fictional screen worlds › International serial drama and telenovelas › East Asian drama series › East Asian web and streaming serials › Titles symbols to Co*
*Initially written Oct 3, 2026 · Reviewed: Oct 25, 2026 · Edited: Oct 15, 2026; Oct 25, 2026; Nov 1, 2026 · Last review: Oct 25, 2026*
*Copyright 2026 EdgeChat AI, a subsidiary of Biostate AI.*
License: Edgepedia Community License 1.0, https://www.edgepedia.org/edgepedia/license