Produce X 101 VietSub (Produce X 101 with Vietnamese subtitles) is a popular survival reality show that aired on Mnet in 2019. This large-scale project aims to create a temporary boy group by selecting trainees from a pool of 101 contestants from various entertainment companies and independent trainees. The show allows the audience, known as "national producers," to vote for their favorite trainees and determine the group's style and name.
Produce X 101 aired every Friday at 11:00 PM (KST) starting from May 3, 2019. The live finale was broadcasted at 8:00 PM (KST) on July 19, 2019. The final group formed through the show was X1. However, after five months of activities, X1 disbanded due to conflicts between the managing companies.
On December 14, Mnet released the first teaser for the show after the conclusion of the 2018 Mnet Asian Music Awards in Hong Kong.
On February 28, it was confirmed that the winning group would promote for five years, with the first 2.5 years being exclusive activities and the remaining 2.5 years being parallel activities with their respective management companies.
On March 4, it was revealed that Lee Dong-wook would take on the role of the representative for this season, replacing Lee Seung-gi. He would serve as the news anchor and representative for the viewers. The filming process also began on the same day, along with the introduction of the mentors.
On March 21, the season's theme song, "X1-MA" (_지마), was revealed on M Countdown. The official premiere date was announced to be May 3, 2019.
This season introduced a new twist with the X class, which consisted of the lowest-ranked trainees with the highest risk of elimination. Additionally, the 11th member of the final group would be determined by the overall votes throughout the season, meaning that the trainee ranked 11th in the finale might not necessarily be the 11th member of the group.
The top 10 contestants would be determined through online and live voting at the studio. After each voting period, the votes would reset to zero. The top 10 contestants at the final stage, along with one X member, would become the members of the winning group. The X member, the 11th member, would be the trainee with the highest online votes from episode 1 to the final episode. In the first and second voting periods, each viewer could vote for 11 trainees per online vote. In the third voting period, each viewer could vote for 2 trainees per online vote. In the voting period for the finale, each viewer could vote for 1 trainee per online vote.