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The Longest Day in Chang'an poster: Yi Yangqianxi and Lei Jiayin with a drawn sword against a burning orange sky

The Longest Day in Chang'an cast and characters

长安十二时辰 · Chang An Shi Er Shi Chen
Who plays whom in The Longest Day in Chang'an, and how the 19 characters are connected. Identity reveals stay closed until you open them.
By C-Drama Compass Editors · Updated · How we rate

Main cast

Lei Jiayin in a green checked suit and striped tie against a yellow backdrop
Lei Jiayin雷佳音as Zhang XiaojingLead
Jackson Yee in a white shirt, one hand at his collar, against a grey backdrop
Jackson Yee易烊千玺as Li BiLead
Reyizha with long wavy hair and hoop earrings in a black top, outdoors
Reyizha热依扎as Tan QiSecond lead
Zhou Yiwei in a white tuxedo and bow tie in front of a yellow building
Zhou Yiwei周一围as Long BoSecond lead
Han Tongsheng walking down a street in a navy padded jacket
Han Tongsheng韩童生as He ZhizhengSupporting
Lu Fangsheng in a denim shirt over a grey T-shirt
Lu Fangsheng芦芳生as Yao RunengSupporting
Song Yunhao in black and white, in a dark shirt
Song Yunhao宋允皓as Cheng ShenSupporting
Yin Zhusheng with a moustache in a black coat in front of a brick wall
Yin Zhusheng尹铸胜as Lin JiulangSupporting
Feng Jiayi in a grey blazer over a patterned shirt
Feng Jiayi冯嘉怡as The EmperorSupporting
Xu Lu in a white cropped suit against a beige backdrop
Xu Lu徐璐as TaizhenSupporting
Wu Xiaoliang in a white T-shirt against a grey backdrop
Wu Xiaoliang吴晓亮as Cao PoyanSupporting
Ge Zhaoen crouching in a black embroidered bomber jacket
Ge Zhaoen葛兆恩as Prince YongSupporting
Lü Liang in a dark suit and tie, close up
Lü Liang吕凉as Guo LishiSupporting
Yu Ailei smiling in a tuxedo and bow tie against a grey backdrop
Yu Ailei余皑磊as Yuan ZaiSupporting
Wang Herun with long hair in a pink sequined slip dress
Wang Herun王鹤润as Wen RanSupporting

How they are connected

Grouped around the main characters. Connections that give away a twist are hidden.

Zhang XiaojingLei Jiayin
  • Li Bi 李必Played by Jackson Yeerecruits him for one day
  • Xu Bin 徐宾Played by Zhao Weiold friend
  • Yao Runeng 姚汝能Played by Lu Fangshengassigned to watch him
  • Wen Ran 闻染Played by Wang Herununder his protection
  • Cheng Shen 程参Played by Song Yunhaorival investigator
Plot revealShow 1 hidden connection
  • Long Bo 龙波Played by Zhou Yiweicomrade from the same regiment
Li BiJackson Yee
  • Tan Qi 檀棋Played by Reyizhamaid and assistant
  • He Zhizheng 何执正Played by Han Tongshengmentor
  • Xu Bin 徐宾Played by Zhao Weiclerk
  • Cui Qi 崔器Played by Cai Luofficer
Long BoZhou Yiwei
  • Cao Poyan 曹破延Played by Wu Xiaoliangaccomplice
  • Yuchang 鱼肠Played by Li Yuanassassin
Plot revealShow 1 hidden connection
  • Xu Bin 徐宾Played by Zhao Weimanipulates him
Li YuZhou Lula
  • Lin Jiulang 林九郎Played by Yin Zhushengrival at court
Lin JiulangYin Zhusheng
  • Yuan Zai 元载Played by Yu Aileiambitious official
Plot revealShow 1 hidden connection
  • Yao Runeng 姚汝能Played by Lu Fangshengsecret informant
The EmperorFeng Jiayi
  • Li Yu 李玙Played by Zhou Lulacrown prince
  • Prince Yong 永王Played by Ge Zhaoenson
  • Taizhen 太真Played by Xu Lufavorite
  • Guo Lishi 郭利仕Played by Lü Liangchief eunuch

Change what opens automatically in .

Who's who

  • Zhang Xiaojing (Lei Jiayin): a scarred veteran with one eye, a reputation for violence and a deep loyalty to the people of the city's poorer wards.
  • Li Bi (Jackson Yee): a young Taoist prodigy who runs the Jing'an Division and believes in rules, method and the empire.
  • Tan Qi (Reyizha): Li Bi's maid, quick-witted and brave, who ends up working the streets beside Zhang Xiaojing.
  • Long Bo (Zhou Yiwei): a smiling, dangerous man whose connection to Zhang Xiaojing is the drama's central personal mystery.
  • Xu Bin (Zhao Wei): a bookish clerk at the Jing'an Division and Zhang's oldest friend in the city.
  • He Zhizheng (Han Tongsheng): the elder statesman who protects Li Bi at court.
  • Lin Jiulang (Yin Zhusheng): the chancellor, who would like the Jing'an Division and the Crown Prince to fail.

Identity Reveals

Ending spoilerShow identity reveals

Long Bo is really Xiao Gui, a survivor of Zhang Xiaojing's old Eighth Regiment, which is why he knows so much about Zhang. The bigger reveal is that Xu Bin, the gentle clerk who seems to be Zhang's most reliable friend in the Jing'an Division, is the mastermind. Several minor characters at the Division, including Yao Runeng, are revealed as informants for the chancellor Lin Jiulang.

Supporting cast

Zhao Wei 赵魏as Xu Bin
Cai Lu 蔡鹭as Cui Qi
Zhou Lula 周陆啦as Li Yu
Li Yuan 李媛as Yuchang

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