The First Frost (Chinese: 难哄) is a 2025 romantic Chinese television drama starring Bai Jingting and Zhang Ruonan. The plot is adapted from the Chinese novel of the same name by Zhu Yi, and is released on Youku and Netflix worldwide. It tells the story of two high school classmates' reunion, after long separation, when they accidentally rent the same apartment. It delves into the complexities of love, longing, trauma and healing.

During its release, Bai Jingting and Zhang Ruonan were ranked 'Top C-Drama artists in the International Market'. Bai's role as "SangYan" was popular and ranked 1st in 'Character Index List'. The series sets record of reaching fastest 10K 'Popularity Heat Index' points within 2 days of its release in Youku.

The series received widespread acclaim, topping charts and setting many records, with the leads' chemistry and engaging storytelling earning positive reviews from audiences and critics. By 10 March 2025, it has exceeded 1.2B viewership on Youku and 2B on Douyin, and became the 'Hottest Youth Idol C-drama' at the beginning of the year. It was ranked in the S+ Tier i.e. 'Top Performing Shows' category on Yunhe Data charts. On 27 February 2025, It was ranked 6th in Netflix's 'Top TV Show Worldwide', and has set a record for the highest ranked C-drama in 'Netflix Global' daily ranking history.