From K-Pop Trainee To Chinese Stage: 5 Surprising Facts About Cai Jinxin After Boys Planet

The journey of a K-Pop idol trainee is rarely a straight line, and for Chinese contestant Cai Jinxin, his time on Mnet’s Boys Planet was just the beginning of a dynamic career shift. Since his elimination from the intensely competitive survival show, Jinxin has surprised fans by quickly pivoting to new projects, proving that a high ranking isn't the only path to success in the entertainment industry. As of December 17, 2025, his latest activities show a clear focus on the Chinese market, leveraging the popularity he gained globally.

Cai Jinxin, known for his striking visuals, impressive height, and infectious ENFP personality, quickly became a fan favorite despite his relatively short run on the Mnet program. His post-show moves, particularly his participation in a major Chinese reality show, highlight the strategic choices trainees make to maintain momentum and build a sustainable career, making his story a fascinating case study for fans following the global idol scene.

Cai Jinxin: Complete Biography and Profile

Cai Jinxin (蔡锦昕) is a Chinese trainee and aspiring idol who first gained international recognition as a contestant on the South Korean survival show Boys Planet. Known for his cheerful demeanor and positive outlook, he captured the attention of "Star Creators" worldwide. His profile details are as follows:

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• Full Name: Cai Jinxin (蔡锦昕)
• Nationality: Chinese
• Birth Date: November 7, 2003
• Age: 22 (as of late 2025)
• Height: 188 cm (6’2”)
• MBTI Type: ENFP (The Campaigner)
• Agency During Boys Planet: EE-Media (also previously linked to Top Class Entertainment)
• Group: C-Group Trainee (Chinese Group)
• Hobbies: Games, food trips, learning a new language, sleeping, and trying new things.
• Specialty: Positivity and good mind control.
• Elimination Rank: 31st (Eliminated during the second elimination round)
• Key Performance: TWICE's "Feel Special" (G-Group)

The Boys Planet Journey: Standing Tall in the C-Group

Cai Jinxin entered the Boys Planet competition as a highly anticipated C-Group trainee, representing the Chinese contingent of contestants. His towering height of 188cm and model-like visuals immediately set him apart, earning him a dedicated following of Star Creators. While his initial 'Star Level' evaluation was not among the top ranks, his determination and positive attitude, which he lists as his specialty, resonated deeply with viewers.

A highlight of his time on the show was the Group Battle Mission, where he performed TWICE's hit song "Feel Special" as part of the G-Group. This performance allowed Jinxin to showcase his stage presence alongside teammates like Cha Woong Ki, Zhang Shuai Bo, and Lee Dong Gun. Despite a strong effort and a sudden rush of attention on Korean forums for his visuals and charming personality, the competition proved fierce. Jinxin was ultimately eliminated in the second elimination round, finishing at Rank 31.

His elimination was a disappointment for many fans, particularly those who appreciated the high-energy and optimistic spirit he brought to the Mnet show. However, for a survival show contestant, Rank 31 is a respectable position that provided a significant platform for his future activities. The experience of competing alongside both K-Group and G-Group trainees under the intense scrutiny of a global audience prepared him for the next major phase of his career.

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The Next Stage: Cai Jinxin’s Pivot to Chinese Reality TV

The most significant and recent update for Cai Jinxin after his Boys Planet run was his swift transition back to the Chinese entertainment landscape. Recognizing the momentum gained from the K-pop survival show, Jinxin became a contestant on the Chinese reality show The Next Stage 2023 (also known as 舞台2023).

This move was a strategic pivot, allowing him to capitalize on his newfound recognition with a domestic audience. The Next Stage 2023, produced by Tencent Video and Wajijwa Entertainment, is a competition focusing on stage performance, giving Jinxin a chance to further hone his skills and showcase his versatility outside of the K-Pop idol training system. His appearance on the show immediately generated buzz among his global fanbase, who were eager to see his next steps.

While his time on The Next Stage 2023 was also short-lived, with his elimination occurring on Episode 3, it confirmed his commitment to a performance-based career. The show served as a crucial bridge, transitioning him from a 'trainee' identity to a recognized 'performer' in the competitive Chinese idol market. This quick follow-up project is essential for maintaining topical authority and relevance in the fast-paced world of entertainment, a lesson many former survival show contestants learn quickly.

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What’s Next for the ENFP Performer?

Following his appearances on two major reality shows in a single year—the global Boys Planet and the domestic The Next Stage 2023—Cai Jinxin has firmly established his name in both the K-Pop and C-Pop communities. His current activities, primarily managed through his social media accounts like Weibo and Instagram, suggest he is actively pursuing his career as an independent artist and performer.

Fans speculate that his current agency, EE-Media, is focused on securing more acting roles or variety show appearances for him in China, given the country's robust entertainment industry. His natural charisma and the highly marketable ENFP personality type make him a strong candidate for variety shows, where his positive and energetic demeanor would shine. Furthermore, his strong visuals align perfectly with the demands of Chinese dramas and web series, offering a potentially lucrative career path outside of the traditional idol group debut.

The story of Cai Jinxin is a testament to the resilience of survival show contestants. While he did not make the final lineup of the Mnet group ZEROBASEONE (ZB1), he successfully translated his global exposure into tangible career opportunities. Fans, often referred to as his "best besties," continue to follow his journey closely, anticipating his official debut or next major project, whether it be a solo music release or an acting role that capitalizes on his stage experience and striking presence.