Previously, there was information that "Lưỡng kinh thập ngũ nhật" was a project with two male leads (with 2 male leads), and also marked the first cooperation between Cheng Yi and Lin Gengxin. However, the list of actors just announced by the film crew has clarified the position of the two stars.
Thanh Nghi is the only actor holding the male lead position of the film. Meanwhile, Lam Canh Tan and Ngo Hanh Kien are classified into the "special acting" group, with the order of arrangement according to the number of lines in the name. This is also considered one of the first projects to apply the method of recording actors' names according to the new regulations of the Chinese film industry.
Cheng Yi confirmed that he accepted to participate in "Twenty-Five Days of Diving Times" from 2023. By the first half of 2024, the crew completed the script for the first 5 episodes and officially started filming in October 2025. After about 8 months of filming, the film wrapped up before announcing the cast at the iQIYI717 event held on July 17.
Throughout the filming process, Thanh Nghi was highly appreciated for his working spirit. Right from the first week of filming, the male actor worked with an intensity of about 12 hours a day.
Action scenes or high-dangerous segments are all directed by him, without using stunt actors. Despite having to film in harsh weather conditions, the male actor still repeatedly edited and perfected the way he portrayed the character, showing his seriousness to the profession.
Duong Kinh Thap Ngu Nhat" directed by Truong Le, adapted from the novel of the same name by Ma Ba Dung. The film tells the 15-day journey of Prince Chu Chiem Co (Thanh Nghi in charge) from Nanjing back to Beijing to succeed the throne. From court battles, chases on the road to the picture of folk life, the whole story revolves around the character's journey of maturity.
Right from the moment the cast was announced, the film received great attention. According to data from the platform, the number of previews has exceeded 1.046 million. The topic about Thanh Nghi on Weibo attracted more than 100 million discussions, while the character Chu Chiem Co continuously topped many charts in terms of level of interest for 3 consecutive months.
Although not yet aired, "Twenty-Five Years of Divergence" still participates in the 9th Shanghai Global Licensing Exhibition. Notably, the exhibition area of the film uses Cheng Yi's own poster as the central image.
