Chinese Title: 问心 (Chi Zi Zhi Xin)
English Title: The Heart
Also Known As: Si Zhe Zhi Shu
Genre: Medical, Romance, Drama
Episodes: 38 (Season 1) 40 (Season 2)
Director: Li Zhi
Screenwriters: Zhang Yi Fei
Original Work:
Plot Synopsis
Zhou Xiaofeng (played by Mark Chao) is the deputy chief physician of the cardiology department at Dongli Hospital. Introverted and highly disciplined in both work and life, he is a key member of the cardiology team, a focus of the department’s leadership and a promising candidate for development.
He partners with Lin Yi (Jin Shi Jia), a straightforward and impulsive cardiac surgeon, in the coronary artery team. Their differing medical philosophies lead to significant disagreements. Lin Yi, also a recent hire, previously focused solely on surgery at Xili Hospital, lacks interaction and collaboration with colleagues.
His supervisor and mentor, Cao Nuoya, believes this hinders his growth and recommends him for a position at Dongli Hospital’s newly established heart center.
Zhou Xiaofeng’s younger sister, Fang Xiaoran (Mao Xiao Tong), pursues her dreams and aims to improve her brother’s relationship with their mother, joining Dongli Hospital as a cardiac intensive care unit doctor.
Through their work treating patients, the three initially misunderstanding and antagonistic each other, but eventually develop mutual appreciation and support, becoming excellent working partners.
Main Cast & Characters
Lead Cast
- Mao Xiao Tong as Fang Xiao Ran
- Jin Shi Jia as Lin Yi
- Mark Chao as Zhou Xiao Feng
Supporting Cast
- Ju Bo Zhan as Cheng Qi
- Mark Ma as Lin Xi Rui
- Luo Lei as Deputy Director Luo
- Zheng Zhong Yu as Xie Tian Ming
- Joan Chen as Fang Zhu Qing
- Amy Chen as Chen Yue
- Zhou Ye Mang as Cao Nuo Ya
- Yan Xiao Pin as Cui Jing
- Fang Zi Bin as Bai Ji
- Zhao Jun as Jiang Jun Ling
- Fang Qing Zhuo as Yang Gui Lan
- Ma Yin Yin as Qiang Wei
Production Details
Original Work:
Production Company: Lemon Pictures, Tencent Video and iQiyi
Filming: Season 1 – filming wrapped in November, 2022. Season 2 – Filming began on September 27, 2025 and ended on February 2nd, 2026.
Episodes & Airing
- Total Episodes: 38 (Season 1) 40 (Season 2)
- Episode Length: 45 minutes
- First Aired: October 7th, 2023 (Season 1). Season 2 – TBA.
- Final Episode: October 24th, 2023.
- Original Network / Platform: iQIYI and Tencent Video
Where to Watch
China:
- CCTV and Tencent Video
International Platforms:
- WeTV
Articles About The Heart
The Heart Season 2 wraps filming, releases actor photos – confirms main / supporting cast
About the Author
