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Key to the Phoenix Heart poster: Hou Minghao seated in black robes and Ai Mi in green robes and a jade headdress, against red ink-painted mountains

Key to the Phoenix Heart cast and characters

雀骨 · Que Gu
Who plays whom in Key to the Phoenix Heart, and how the 23 characters are connected. Identity reveals stay closed until you open them.
By C-Drama Compass Editors · Updated · How we rate

Main cast

Hou Minghao in a black jacket against red and black diagonal stripes
Hou Minghao侯明昊as Xiao WuyiLead
Ai Mi with long brown hair threaded with small white flowers, in a white lace top against a blurred green backdrop
Ai Mi艾米as Xie JiayuLead
Riley Wang with short dark hair in a black jacket over a mustard top against a pale draped backdrop
Riley Wang王以纶as Li MaoSecond lead
Ma Qiuyuan with long black hair in a white T-shirt and a small necklace against a pale blue backdrop
Ma Qiuyuan马秋元as Li LejunSecond lead
Peter Ho in a black suit and open white shirt against a pale backdrop with a red-handled prop
Peter Ho何润东as Xie HuaiguiSupporting
Zhang Yujian in round glasses and a black polo shirt
Zhang Yujian张雨剑as Prince of ChangshaSupporting
Sheng Yilun in a black blazer over a white T-shirt, standing against a white brick wall
Sheng Yilun盛一伦as the EmperorSupporting

How they are connected

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

Xiao WuyiHou Minghao
  • Xiao Yao 萧尧Played by Su Junhebrothers
Xie JiayuAi Mi
  • Xiao Wuyi 萧无衣Played by Hou Minghaocontract marriage, then love
  • Li Mao 李茂Played by Riley Wangchildhood sweethearts
  • Xie Huaigui 谢怀归Played by Peter Hofoster father
  • Li Fuhua 李甫华Played by Jin Shafoster mother
Li MaoRiley Wang
  • Xiao Wuyi 萧无衣Played by Hou Minghaorivals, then allies
Li LejunMa Qiuyuan
  • Li Mao 李茂Played by Riley Wangsiblings
  • Eagle King 鹰王Played by Merxatfalls for
  • Empress Dowager He 何太后Played by Tao Xinranholds as hostage

Change what opens automatically in .

Who's who

  • Xiao Wuyi (Hou Minghao): heir of the Prince of Jing'an and commander of the Beifu army. After the defeat at Jiuzhangyuan he lets the court believe he died, then comes back to find who sent his men bad weapons.
  • Xie Jiayu (Ai Mi): the Grand Tutor's foster daughter, an orphan whose birth parents were killed by Northern Qin raiders. She designs mechanisms and sells them in secret.
  • Li Mao (Riley Wang): Prince Qi. He and Jiayu planned to run away on her wedding night, but a coup traps him in the palace as regent.
  • Li Lejun (Ma Qiuyuan): Lady Pingning, Li Mao's sister, held at court as the Empress Dowager's hostage.
  • Xie Huaigui (Peter Ho): the Grand Tutor, Jiayu's foster father, a patient schemer.
  • The Eagle King (Merxat): a Northern Qin prince, real name Mu Lianyu (穆连余), who tries to win three border provinces with an archery contest instead of a war.
  • Empress Dowager He (Tao Xinran): the power behind the throne.
  • Xiao Yao (Su Junhe): Wuyi's elder brother, kept off the battlefield by their mother's fears.
  • He Yuanji (Zheng Yawen) and Rui Sheng (Liu Lingzi): Wuyi's wife and concubine in name only. Rui Sheng is the widow of one of his officers, and treats his failing eyes.
  • Li Fuhua (Jin Sha): Princess Yunzhao, Xie Huaigui's wife and Jiayu's foster mother, who divorces him early on.

Identity Reveals

Ending spoilerShow identity reveals
  • Xiao Wuyi didn't die at Jiuzhangyuan. He faked it and slipped back into the capital to investigate.
  • Jiayu is Miaoshou Gongzi, the inventor whose crossbow design reached the army. Xiao Yao exposes this in episode 5.
  • Xiao Wuyi is really Crown Prince Wenxi, raised as Xiao Sheng by the Jing'an family. Princess Yunzhao reveals it in episode 7.
  • He Yuanji and Rui Sheng each love someone else, and the boy in Wuyi's household is not his son.
  • The Empress Dowager is behind the Prince of Changsha's coup.
  • Cui Jun is a Northern Qin spy.
  • Xie Huaigui loved Consort An and spent two decades scheming to clear her family.

Supporting cast

Merxat 米热as Eagle King
Liu Lingzi 刘令姿as Rui Sheng
Zheng Yawen 郑雅文as He Yuanji
Su Junhe 苏袀禾as Xiao Yao
Tao Xinran 陶昕然as Empress Dowager He
Jin Sha 金莎as Li Fuhua
Shao Tong 邵桐as Xiao Ju
Wang Likun 王丽坤as Shao Yang
Dang Tao 党涛as Yuan Xiaoliu
Man Jiang 满江as Cui Jun
Cheng Yufeng 程宇峰as Cui Shao'an
Birgit 博尔吉特as Liu Zhaolin
Qu Zhihan 曲芷含as Nan Xing
Shi Yanpei 释延霈as Qinglong
Zheng Yuxuan 郑雨轩as Yanyue
Wang Jingwen 王婧雯as Cang'er

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