[2] Touting the catchphrase "Thirty dark horses, return to youth", Sisters Who Make Waves follows the general formula idol group reality shows like Produce 101 and Idol Producer, but with the twist that participants are already well-known and veteran celebrities and are all aged 30 and above, with an average age of 35+.

Top 7 contestants debuted as X-SISTER on the show's finale on September 4, 2020, but the announcement of disbandment was made on January 1, 2021, as members resume their own entertainment activities.

The six songs are "兰花草" by YinShia, "推开世界的门" by Faith Yang, "Beautiful Love" by Tanya Chua, "得不到的爱情" by Yao Lee, "艾瑞巴迪" by New Pants, and "大碗宽面" by Kris Wu.

Each of the six groups then practice for their respective song, with the performance order determined by the initial stage results.

[8] Among the three-member, five-member, and seven-member performance pairings, the members of the losing group may face elimination.

6 contestants were temporarily eliminated: Wang Zhi, Adia Chen, Zhu Jing, Hai Lu, Liu Yun and Xu Fei.

The performance order is decided based on the total of the first-round audience favorite of each group member.

At the same time, a personal battle was added to opening performance, and each group sent a sister to participate, they were Meng Jia, Wang Feifei, Li Si Dan Ni and Baby Zhang.

Wan Qian and Zhang Yuqi's group members faced elimination based on individual popularity votes.

After taking into account individual popularity votes, Li Si Dan Ni became the second leader.

The other sisters were split into two groups to meet the two new leaders, Ning Jing and Li Si Dan Ni, for a quick chat.

The 7 members were picked from a list of sisters who were eliminated in previous rounds, based on netizens vote, they are: A Duo(Leader), Meng Jia, Shen Mengchen, Wu Xin, Jin Sha, Zhu Jingxi and Wang Zhi.

"Roof on Fire" (宋茜 Victoria Song) The rivival group gets one revival spot for their wonderful performance in individual battles.

A Duo and Meng Jia successfully revived based on audience votes, while the Michelle Bai and Huang Shengyi faced elimination.

The selection of the 7 sisters is done through several rounds of voting based on multiple performances throughout the show as well as individual popularity.

Round 1: The leaders from each team goes up to the podium to announce the number of votes received for each of their three songs performed during Episode 12.

(Ning Jing Group gets the spot) Round 2: Two teams will compete the number of votes received from online audience for each of their three songs performed during Episode 12.

(Ning Jing Group gets the spot for most points from one single song, and Li Si Dan Ni Group gets two spots for most points from three songs in total) Round 3: Two teams will compete the number of votes received from online audience for each of their all shows performed during the previous episodes.

(Li Si Dan Ni Group gets the spots) Round 4: Two teams will compete the number of votes received from online audience for likes to all the members during the whole season.

Whichever group received the most points combined from the total likes to members will get one debuting spot.

Isabelle Huang There are also 5 individual awards in the season: X-Leader, for the leader from the group with more debuting spots.