2018–2019: Beginning In 2017, Ruonan was invited via a private message from the official Weibo account of the film
Cry Me a Sad River to play a role in the project. The film is a realistic youth film focusing on the theme of school bullying, in which she portrayed "Gu Senxiang", who meets a tragic end after being bullied. The film won an award at the 4th German-Chinese Film Festival and received significant media attention. On 21 September 2018, the film, directed by
Guo Jingming, was nationwide released, marking her solo lead debut.
2020 to present: Breakthrough and Rising popularity In 2020, Ruonan made her small screen debut in
iQIYI's romantic series
Everyone Wants to Meet You, produced by
Zhao Wei. The drama explores how emotional healing can emerge when people face their past wounds and learn to trust again, with Luo Xi—played by Ruonan—portrayed as a bright, cheerful girl who helps the workaholic Zhang Min. She starred in
Youku's historical romantic comedy
Love is All, where she portrayed Tan Lingyin, a writer and government official. The series shows how growth, trust and love are gradually established through misunderstandings and partnership, as two mismatched individuals navigate challenges together beneath a surface of light-hearted humour. In the realistic short film
College Entrance Examination 2020, she portrayed as an aspiring student; this aired during the "National Day Gift:
Hunan TV's Blue Moon Mid-Autumn Festival". In December 2020, her fantasy romance film
The End of Endless Love exceeded ¥200 million within five days, and the total box office revenue was ¥334 million. In the film, Ruonan played Ji Ze, a folk singer struggling with depression who was healed by the character Xin Tang. She performed a song "Diary of Love" alongside
Wei Daxun during
Hunan TV's "
Pinduoduo 12.12 Super Fighting Night". In 2021, Ruonan starred as Liang Nuo in the army-themed series
The Glory of Youth, aired on
Jiangsu Satellite TV. The series centers on a group of young people enlisting in the army, their gradual understanding of responsibility, sacrifice and collective honour in strict training and mission tests, and finally completes the transformation from ordinary youth to qualified soldiers and the firmness of faith. She appeared in the emotional youth film
My Love, alongside
Greg Hsu, she played a character insecure due to a broken family. The film follows a love story that spans many years but has been misplaced, reflecting youth's choices, growth, reality, and the emotional process of learning to let go.
My Love premiered across China, Singapore, Taiwan, South Korea, Brunei, North America, Europe, Australia, and New Zealand and was a commercial success, grossing ¥822 million at the box office. She starred in the revolutionary historical film
The Pioneer, directed by Xu Zhanxiong. In August, she starred in the female-oriented drama
Be Yourself, portraying a girl raised in luxury who exhibits "princess syndrome". The series tells the story of four girls starting university and traces their growth and experiences over four years on campus. For this role, she won the Breakthrough Actress of the Year at the first New Horn TV Drama Directors Awards. She also appeared in
Youku's emotional inspirational drama
Psychologist. In 2022, Ruonan participated in
iQIYI's outdoor camping reality show
Camping Life. In
Defying the Storm, she portrayed "Meng Haitang", a character born into a scholarly family. The series explores the story of pilots and cultural scholars who intersect with each other on the road to saving the country. In August, she participated in season 6 of the celebrity reality show
Chinese Restaurant. In 2023, she starred in the youth love
All These Years, and in the romantic comedy
Too Beautiful to Lie films, earning nominations for both at the New Era International Film Festival.
Too Beautiful to Lie tells the romantic comedy story of Bai Na, a female swindler from the Jianghu, and Fang Yaodong, a simple-minded man from a small town, as they encounter love. That same year, she played a central role in
Love Life Light, which went to gross ¥275 million at the box office. The screen work can be categorised as a "post-pandemic healing film", which tells the story of how people face the reality of losing loved ones, how they struggle to move beyond trauma, settle their minds and bodies, and rebuild their lives. She also starred in the fire-fighting series
A Date with the Future, alongside
William Chan. The drama follows a firefighter who makes a 10-year promise to Xu Lai (played by Ruonan) to reassure her, and their reunion a decade later as she returns as a journalist and search dog trainer while he serves as a fire station captain, and they work together to keep that promise. Ruonan was awarded the Promising Drama Performer at the
Tencent Video All Star Awards for this role. The series received the “Chinese Cultural Communication Award” at the 2024 China–US Television Festival, as well as the “Outstanding TV Series of the Year” honour at the TV Landmark 2023 awards. Ruonan was paired with
Luo Yunxi in
Love is Panacea, portraying Su Weian - a determined and compassionate medical student. The series delves into the story of a neurosurgeon who meets a medical student with a rare illness during an aid mission in
Africa; as they confront Huntington's disease together, they fall in love and help heal each other. In 2024, Ruonan appeared as the lead in the romantic comedy
My Boss with
Chen Xingxu. She played the rookie lawyer Cheng Yao in the series, which explores a determined young woman who becomes a lawyer and unexpectedly ends up living with her demanding boss, where their professional rivalry gradually turns into a complicated romance. She acted in
Born To be the One, for which she earned the Breakthrough Performance Actress of the Year award at the
Dragon TV Drama Quality Festival. The series unfolds the story of three young couples living in Beijing who, when faced with numerous crises in their careers and lives, chose not to give up but instead confronted their inner selves and ultimately overcame these crises together. In 2025, Ruonan starred in the series
The First Frost alongside
Bai Jingting, an adaptation of the romantic novel by Zhu Yi. It set a record for the fastest 10,000 popularity index on
Youku, within two days of its release; trended in the "Top 3 Television Shows" on
Netflix, and earned her "Top C-Drama Artists in the Global Market". The series surpassed 1.2 billion views one month after its premiere and 1.5 billion views after six months across streaming platforms worldwide. In this drama, she played Wen Yifan, a quiet and emotionally guarded woman who reconnects with her past and gradually heals through her love relationship. She also featured in the film
Mumu, in which she delicately portrays the character's inner grievances and loneliness, and enters the world of the deaf community with a sincere attitude, showcasing a moving emotional performance. The film follows a deaf father and his young daughter as they struggle to navigate life together while confronting communication barriers, social challenges, and the need for mutual understanding. In 2026, Ruonan played a leading role in
Live Up to Your Youth alongside
Bai Yu,
Lin Yun and
Wang Yanlin, which premiered on
iQIYI. The series is a key literary and artistic project under the "Beijing Grand Audiovisual" initiative of the Beijing Municipal Radio and Television Bureau. Set in Beijing from the 1990s to 2018, it focuses on the artistic dream-pursuing journey of young people who moved to Beijing, showcasing their real-life struggles and growth in fields like scriptwriting and musical performance. Ruonan played Zhuang Zhuang, a struggling dreamer and singer navigating ambition, hardship, and self-discovery while chasing her future in
Beijing. The drama not only became the fastest series to surpass a 3% rating on CCTV-8 in 2026, achieving a high market share, but also ranked among the top prime-time shows on the channel. The same year, she portrayed a supporting character in the film
My Friend An Delie, for which she received the Best Supporting Actress nomination at the Asian Art Film Festival. ==Endorsements==