# The Truth (风过留痕)
**The Truth** (风过留痕, literally "when the wind passes, it leaves a trace") is a 2026 Chinese crime drama broadcast on [Tencent Video](https://www.edgepedia.org/tencent-video) and iQIYI, described as China's first television series centered on trace-evidence examination (痕检), the forensic discipline of recovering and analyzing physical clues such as shoe prints, fibers, and microscopic debris.[1](https://www.tvmao.com/drama/ZGJjY28k/playingtime) • [2](https://wapbaike.baidu.com/tashuo/browse/content?id=a80008015def7ad97170f386) It premiered on 3 February 2026 and ran 30 episodes, concluding on 24 February 2026.[1](https://www.tvmao.com/drama/ZGJjY28k/playingtime) • [3](https://ent.ifeng.com/c/8r08mmqWZhF)
| Key fact | Detail |
|---|---|
| Original title / English titles | 风过留痕; The Truth, also listed as The Remains of the Wind[4](https://thetvdb.com/series/feng-guo-liu-hen) |
| Premiere / finale | 3 February 2026 on Tencent Video and iQIYI, daily at 6:00 pm; concluded 24 February 2026[1](https://www.tvmao.com/drama/ZGJjY28k/playingtime) • [4](https://thetvdb.com/series/feng-guo-liu-hen) • [3](https://ent.ifeng.com/c/8r08mmqWZhF) |
| Format | 30 episodes, average runtime 45 minutes, crime drama and thriller[4](https://thetvdb.com/series/feng-guo-liu-hen) |
| Director / writer | Zhang Tong (director), Lin Jidong (screenwriter)[1](https://www.tvmao.com/drama/ZGJjY28k/playingtime) |
| Source material | Adapted from the documentary-style novel *Shi'an Diaocha Ke* (尸案调查科) by Jiushui (九滴水), a former trace-evidence examiner[5](https://gdj.beijing.gov.cn/hyjj/ztcz1/202603/t20260323_4563990.html) |
| Lead cast | Gong Jun as Ye Qian, Jiang Wu as Leng Qiming, Sun Yi as Dan Qing[6](https://www.sina.cn/news/detail/5260454873269820.html) |
| Structure | 11 unit cases across 30 episodes, plus a drug-enforcement subplot[3](https://ent.ifeng.com/c/8r08mmqWZhF) |
## Spoilers
### Premise and source material
The series is set in the criminal technology division of the fictional Yunxi City Public Security Bureau, a hub for serious and unusual cases. A team of investigators led by team leader Leng Qiming, including Ye Qian, Si Yuanlong, Jiao Lei, and Zhang Ziwu, works as a young, professional unit whose members range from psychological profilers to technicians skilled with investigative instruments. Their stated motto is "cracking the code of death, protecting the dignity of life."[7](https://wetv.vip/zh-cn/play/cw07r5wxx43mr6i-%E9%A3%8E%E8%BF%87%E7%95%99%E7%97%95)
The drama adapts *Shi'an Diaocha Ke* (尸案调查科), a documentary-style novel by Jiushui, who worked as a trace-evidence examiner before writing. According to a review published by the Beijing Municipal Radio and Television Bureau, the author's professional background gives the source material unusually accurate forensic detail, and the adaptation follows real investigative procedure closely.[5](https://gdj.beijing.gov.cn/hyjj/ztcz1/202603/t20260323_4563990.html) The production built a 1:1 replica of a trace-evidence laboratory, and the cast rehearsed sample-collection techniques; the laboratory set includes equipment such as a Fourier-transform infrared spectrometer and a scanning electron microscope with energy-dispersive system, with procedures reviewed by an advisor from the [Ministry of Public Security](https://www.edgepedia.org/ministry-of-public-security)'s Institute of Forensic Science.[8](https://post.smzdm.com/p/a65e9pk0/) • [9](https://www.sina.cn/news/detail/5262697128005857.html) [Gong Jun](https://www.edgepedia.org/gong-jun) reportedly studied for an autopsy-related certificate to prepare for the role of a trace-evidence expert.[10](https://yule.360.com/detail/4902482)
The 11 unit cases cover subjects including the murder of a teenage girl, a rural family massacre, a body dumped on a highway, a dead bride, a cross-national bride case, and a betrayal between close friends. Reviewers noted that the cases echo real Chinese cases, including the Baiyin serial murders, the Xingtai family massacre case, the red-clothed boy case, the Jiang Ge case, and the Zhang Koukou case.[3](https://ent.ifeng.com/c/8r08mmqWZhF) • [5](https://gdj.beijing.gov.cn/hyjj/ztcz1/202603/t20260323_4563990.html)
### Cast and characters
Gong Jun plays Ye Qian, a returned-from-overseas trace-evidence expert who represents technical, instrument-driven investigation, relying on ultraviolet detection and spectral analysis. Jiang Wu plays the veteran detective Leng Qiming, who represents traditional experience-based investigation, reading micro-expressions and human motives during interrogation. Sun Yi plays Dan Qing, whose true identity as Chen Yumo, an undercover narcotics officer, is revealed near the finale.[11](https://post.smzdm.com/p/avvod3l4/) • [3](https://ent.ifeng.com/c/8r08mmqWZhF)
The supporting cast includes Zhang Kaitai as Si Yuanlong, Feng Hui as Jiao Lei, and Liu Hailan as Zhang Ziwu, with Wang Mengli, Kong Lin, Wang Runze, and Chai Junzhe also in the main cast.[1](https://www.tvmao.com/drama/ZGJjY28k/playingtime) • [3](https://ent.ifeng.com/c/8r08mmqWZhF) [Wang Xun](https://www.edgepedia.org/wang-xun) appears as Jiang Honghai and Jia Bing as Bao Hei, with Li Jianyi in a special appearance.[12](https://www.iqiyi.com/a_1hgr5q6ea4x.html) • [6](https://www.sina.cn/news/detail/5260454873269820.html) Jia Bing, known for comedy roles, plays a hypocritical philanthropist villain.[8](https://post.smzdm.com/p/a65e9pk0/)
## Production and broadcast
The drama was a flagship project of the Beijing Municipal Radio and Television Bureau's "Beijing Dashiting" (北京大视听) quality-content program, produced by Tencent Video with Lao You Film and [Television](https://www.edgepedia.org/television) and Golden Light Culture as co-producers.[3](https://ent.ifeng.com/c/8r08mmqWZhF) • [5](https://gdj.beijing.gov.cn/hyjj/ztcz1/202603/t20260323_4563990.html) It aired daily at 6:00 pm on Tencent Video and iQIYI from 3 February 2026, and streamed internationally on WeTV under the English title *The Truth*.[1](https://www.tvmao.com/drama/ZGJjY28k/playingtime) • [4](https://thetvdb.com/series/feng-guo-liu-hen)
## Reception
**Early heat.** The platform heat index passed 18000 within 60 minutes of launch and exceeded 21000 after the first four episodes.[13](https://yule.360.com/detail/4901309) • [14](https://www.vso.com.cn/ent/yulun/2026-02-04/878447.html) A kiss scene broadcast on 10 February 2026 raised Tencent Video's single-day danmu (bullet-comment) volume by more than 30 percent.[15](https://k.sina.com.cn/article_7879776328_1d5abd848068018e56.html)
**Divided reviews.** Reception split sharply. Supporters praised the drama's procedural realism: commenters compared it to the 2000s series *Zhong'an Liuzu* (重案六组, Major Crimes Unit) for its grounded, step-by-step depiction of investigation, from first-responder scene analysis to laboratory division of labor.[16](https://www.sina.cn/news/detail/5263706474155268.html) • [9](https://www.sina.cn/news/detail/5262697128005857.html) Critics of the acting concentrated on Gong Jun's lead performance, with viewer comments describing it as stiff and lifeless, while crediting Jiang Wu's portrayal of Leng Qiming as the series' anchor in the early episodes.[13](https://yule.360.com/detail/4901309) A review in *Ta Kung Pao* judged that the drama assembled appealing crime-drama elements without being surprising, and that Gong Jun's command of the role had room to improve.[17](https://epaper.tkww.hk/a/202603/22/AP69befeffe4b04773b06a41c1.html) Other critics found the romance subplot disproportionate for a serious-crime drama and the overall effect forgettable.[18](https://www.wenxuecity.com/blog/202602/82461/15277.html)
**Ratings conflict.** The drama became the target of coordinated one-star ratings on Douban, which prompted some viewers to post five-star ratings in response; one such viewer rated it five out of ten, calling it not a masterpiece but far from a one-star work.[19](https://www.sina.cn/news/detail/5264472199661011.html) The iQIYI page lists a score of 6.9,[12](https://www.iqiyi.com/a_1hgr5q6ea4x.html) while TVmao shows 8.3 from 24 user ratings.[1](https://www.tvmao.com/drama/ZGJjY28k/playingtime) Commercially, a Phoenix-affiliated report stated that Tencent's in-platform heat never exceeded 23000 and iQIYI's stayed below 6000, a result the report characterized as below expectations given Gong Jun's star profile.[20](https://jl.ifeng.com/c/8qh2GBzMECu)
## Significance
Commentators identified the series' main contribution as filling a subject-matter gap: trace-evidence examination had not previously been the central focus of a Chinese crime drama, and the industry analyst Datawin (德塔文) described it as an exploration of specialization within the genre.[2](https://wapbaike.baidu.com/tashuo/browse/content?id=a80008015def7ad97170f386) • [21](https://post.smzdm.com/p/arlxorxz/) In a survey of 87 viewers, 65 percent favored the drama's high-tech investigation approach over traditional experience-based sleuthing, citing objectivity and professional authenticity.[11](https://post.smzdm.com/p/avvod3l4/) The finale's case resolution, in which a suspect appears to press a detonator that instead releases fireworks, was cited by Phoenix Entertainment as an example of the series' distinctive forensic-driven dramatic style.[3](https://ent.ifeng.com/c/8r08mmqWZhF)
## References
1. [风过留痕 播出时间, 电视猫](https://www.tvmao.com/drama/ZGJjY28k/playingtime)
2. [《风过留痕》开播：国内首部痕迹检验刑侦剧填补行业题材空白, 百科TA说](https://wapbaike.baidu.com/tashuo/browse/content?id=a80008015def7ad97170f386)
3. [龚俊姜武孙怡《风过留痕》正式收官 国内首部痕检刑侦剧走技术流创造口碑, 凤凰网娱乐](https://ent.ifeng.com/c/8r08mmqWZhF)
4. [The Truth (风过留痕), TheTVDB.com](https://thetvdb.com/series/feng-guo-liu-hen)
5. [UP！"北京大视听"引领力｜《风过留痕》刑侦剧的叙事创新与表达突破, 北京市广播电视局](https://gdj.beijing.gov.cn/hyjj/ztcz1/202603/t20260323_4563990.html)
6. [《风过留痕》定档微博公告, 新浪新闻](https://www.sina.cn/news/detail/5260454873269820.html)
7. [风过留痕, WeTV](https://wetv.vip/zh-cn/play/cw07r5wxx43mr6i-%E9%A3%8E%E8%BF%87%E7%95%99%E7%97%95)
8. [看完四集《风过留痕》，我想说中国刑侦剧的大门要被龚俊踹烂了, 什么值得买](https://post.smzdm.com/p/a65e9pk0/)
9. [风过留痕才是刑侦剧该有的样子吧, 新浪新闻](https://www.sina.cn/news/detail/5262697128005857.html)
10. [《风过留痕》开播！龚俊为演痕检专家考尸检证书, 360娱乐](https://yule.360.com/detail/4902482)
11. [高科技刑侦 vs 传统经验破案？87位观众的真实反馈, 什么值得买](https://post.smzdm.com/p/avvod3l4/)
12. [风过留痕, 爱奇艺](https://www.iqiyi.com/a_1hgr5q6ea4x.html)
13. [演技尬得像AI，姜武《风过留痕》遭恶评？, 360娱乐](https://yule.360.com/detail/4901309)
14. [龚俊悬疑剧《风过留痕》首播4集，热度破21000, 宠网娱乐](https://www.vso.com.cn/ent/yulun/2026-02-04/878447.html)
15. [《风过留痕》这场吻戏如何影响了该剧的收视率和网络讨论热度？, 新浪新闻](https://k.sina.com.cn/article_7879776328_1d5abd848068018e56.html)
16. [龚俊《风过留痕》剧评, 新浪新闻](https://www.sina.cn/news/detail/5263706474155268.html)
17. [《風過留痕》集結刑偵劇討喜元素卻不驚喜, 大公報](https://epaper.tkww.hk/a/202603/22/AP69befeffe4b04773b06a41c1.html)
18. [《风过留痕》：一部"戏过无痕"的刑侦剧, 文学城博客](https://www.wenxuecity.com/blog/202602/82461/15277.html)
19. [第一次在豆瓣给电视剧评分，给《风过留痕》打五分, 新浪新闻](https://www.sina.cn/news/detail/5264472199661011.html)
20. [一大波精品国剧挑花了眼！超长春节假期追哪部？, 凤凰网](https://jl.ifeng.com/c/8qh2GBzMECu)
21. [《罚罪2》《风过留痕》为何成扫黑剧黑马？, 什么值得买](https://post.smzdm.com/p/arlxorxz/)
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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 Sp to Z*
*Initially written Oct 3, 2026 · Reviewed: Oct 3, 2026; Oct 25, 2026 · Edited: Oct 3, 2026; Oct 25, 2026; Nov 1, 2026 · Last review: Oct 25, 2026*
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