History: Team X
2015
- April 17 - Team X is formed with 17 girls: Chen Lin, Feng XiaoFei, Li Jing, Li Zhao, Sun JingYi, Shao XueCong, Song XinRan, Sun XinWen, Wang JiaLing, Wang Shu, Wang XiaoJia, Xie TianYi, Yang BingYi, Yan MingJun, Yang YunYu, Zhang DanSan, Zhang YunWen
- October 25 - Sun JingYi graduated from SNH48
2016
- March 26 - Lin YiNing promoted to Team X
- September 15 - Yan MingJun transferred to Team B (BEJ48)
- October 16 - Zhang YunWen graduated from SNH48
- October 28 - Yao YiChun promoted to Team X
2017
- September 7 - Sun YaPing promoted to Team X
2018
- February 3 - SNH48 Team Shuffle
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- Chen YunLing, Pan YingQi, Xu ShiQi transferred to Team X
- Shao XueCong transferred to Team SII
- Sun YaPing, Yao YiChun demoted to SNH48 Research Students
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- March 29 - Lin YiNing graduated from SNH48
- April 22 - Li Jing graduated from SNH48
- July 30 - Wang Shu graduated from SNH48
- September 9 - Lu JingPing promoted to Team X
- October 13 - Yang YunYu graduated from SNH48
- October 20 - Xu ShiQi graduated from SNH48
2019
- January 19 - SNH48 Group Grand Shuffle 2019
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- Liu JingHan, Zhang QiongYu transferred to Team X
- Chen YunLing transferred to IDOLS Ft
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- April 25 Zhang DanSan transferred to IDOLS Ft
- April 30 - Liu JingHan graduated from SNH48
- July 9 - Zhang DanSan graduated from SNH48
2020
- May 20 - Lu JingPing graduated from SNH48
- August 27 - Feng XiaoFei, Wang JiaLing graduated from SNH48
- September 4 -
- Zhang QiongYu transferred to Team G (GNZ48)
- Pan YingQi, Sun XinWen transferred to Team Unknown
- Zhang JiaYu transferred to IDOLS Ft
2021
- May 11 - Li XingYu and Li Zhao graduated from SNH48.
- July 2 - Shonichi of Team X 6th Stage
- August 16 - Wu BoHan promoted to Team X
- August 23 - Lin JiaYi, Yu JiaWei promoted to Team X
- August 24 - Huang XuanQi had concurrent position in Team X
- December 19 - Wang YiLiu and Xiong ZiYi promoted to Team X
