1x1 - Episode 1

January 19, 2018

Contestants grade themselves from A to F prior to entering the studio. They seat themselves amongst a pyramid of chairs. The mentors are introduced and begin to judge the contestants' first performance. The trainees are reassigned new grade levels from A to F.

1x2 - Episode 2

January 26, 2018

The rankings for the first round of voting are revealed while agency evaluations continue. The show's theme song "Ei Ei" is revealed and trainees must prepare to film an individual performance in 3 days. The mentors reassign grades once again based on the trainees' performance video.

1x3 - Episode 3

February 2, 2018

The trainees practice for the theme song "Ei Ei" and the Center position is chosen from the group of A grade trainees. Following the recording for "Ei Ei", the second mission, Team Battle evaluation, is revealed. The trainees are to be put into 16 teams to perform 8 songs.

1x5 - Episode 5

February 16, 2018

The first elimination takes place with only the Top 60 contestants to remain. Polls are held amongst the trainees for "Best Visual" and "The Person I Would Most Want to Introduce to My Little Sister". The trainees play a game to obtain Chinese New Year presents for their fans. The mentors also hold a dance battle, where the trainees dance to "Ei Ei" at various speeds, to help the trainees relax. The winner of the dance battle requests for a group Hot Pot outing as his wish, to which the director agrees.

1x6 - Episode 6

February 23, 2018

The third mission, Position Evaluations, begins. There are 5 songs for the vocal category, 4 songs for the dance category, and 4 songs for the rap category. The trainees with higher rankings pick their songs first, and once the chosen song reaches its member limit, the later trainees can no longer pick that song.

1x7 - Episode 7

March 2, 2018

Position Evaluation performances continue. The trainee with the most votes in each of the categories (vocal, dance, rap) are revealed.

1x8 - Episode 8

March 9, 2018

The fourth mission, Concept Evaluation, is revealed. Trainees are presented with 5 new original songs of varying genres. They are placed into groups of 12 via fan votes. Temporary Center positions are picked as only 7 trainees may perform each song following eliminations. The second elimination takes place with only the Top 35 contestants to remain.

1x9 - Episode 9

March 16, 2018

Teams are reorganized following eliminations and Concept Evaluation performances commence. Live audience voting results are announced following all performances.

1x10 - Episode 10

March 23, 2018

1x11 - Episode 11

March 30, 2018

1x12 - Episode 12

April 6, 2018