History: Team NII
2013
- November 11 - Team NII is formed with 24 girls: Chen JiaYao, Chen JiaYing, Dong YanYun, Feng XinDuo, Gong ShiQi, Hu SiYi, Huang TingTing, He XiaoYu, Ju JingYi, Luo Lan, Lu SiQin, Lin SiYi, Lu Ting, Li YiTong, Meng Yue, Tang AnQi, Wang JiaLu, Wan LiNa, Wang YiJun, Xu YanYu, Yi JiaAi, Yang YaRu, Zhao Yue, Zeng YanFen
- November 23 - Shonichi of Team NII 1st Stage
- December 1 - Wang YiJun graduated from SNH48
2014
- February 8 - Hu SiYi, Wang JiaLu, and Yang YaRu graduated from SNH48
- February 15 - Chen JiaYao graduated from SNH48
- Febuary 19 - Lu SiQin graduated from SNH48
- April 13 - Senshuuraku of Team NII 1st Stage
- April 17 - Chen WenYan joined Team NII
- September 5 - Li Xuan, Zhou ShuYan, Zhang YuXin promoted to Team NII
- October 30 - Zhou ShuYan graduated from SNH48
- November - Xu YanYu graduated from SNH48
2015
- March 17 - Li Xuan graduated from SNH48
- September 13 - Liu ShiLei, Zhou Yi promoted to Team NII
2016
- March 26 - Liu ShiLei graduated from SNH48
- March 26 - Deng YanQiuFei, Huang TongYang, Qian Yi promoted to Team NII
- July 30 - Meng Yue, Dong YanYun graduated from SNH48
- August 14 - Deng YanQiuFei, Qian Yi graduated from SNH48
- September 15 - Jiang ZhenYi, Liu JuZi, Liu Ying, Xu Yi, Xu Zhen, Zhang YaMeng promoted to Team NII
- October 25 - Tang AnQi graduated from SNH48
2017
- May 19 - Luo Lan, Xu Zhen graduated from SNH48
- May 28 - Jin YingYue promoted to Team NII
- September 10 - Zhang YaMeng graduated from SNH48
- September 10 - Ge JiaHui promoted to Team NII
- October 4 - Ma Fan promoted to Team NII
- November 6 - Ge JiaHui graduated from SNH48
- December 15 - Zhou Yi graduated from SNH48
2018
- January 24 - Gong ShiQi, Zeng YanFen graduated from SNH48
- February 3 - SNH48 Team Shuffle
- Guo QianYun, Hao WanQing, Liu PeiXin, Tao BoEr, Xie Ni, Yan JiaoJun, Zhang Yi
- Guo QianYun, Hao WanQing, Liu PeiXin, Tao BoEr, Xie Ni, Yan JiaoJun, Zhang Yi transferred to Team NII
- Lin SiYi, Li YiTong, Wan LiNa transferred to Team HII
- Ma Fan, Xu Yi transferred to Team FT
- Huang TongYang, Liu Ying demoted to SNH48 Trainee
- Guo QianYun, Hao WanQing, Liu PeiXin, Tao BoEr, Xie Ni, Yan JiaoJun, Zhang Yi
- March 4 - Ju JingYi graduated from SNH48
- March 31 - Yan JiaoJun graduated from SNH48
- April 27 - Li MeiQi, Ma Fan, Zhang Xi transferred to Team NII
- August 25- Guo QianYun graduated from SNH48
- August 27 - Hao WanQing graduated from SNH48
- September 9 - Liu Jie, Luan JiaYi, Zhou RuiLin promoted to Team NII
- September 23 - Liu PeiXin graduated from SNH48
- October 22 - Chen WenYan graduated from SNH48
- November 2 - Yan Qin promoted to Team NII
- December 29 - Tao BoEr graduated from SNH48
2019
- January 19 -
- Wang ShiMeng
- Lu TianHui, Wang ShiMeng, Zhao JiaRui, Zhou ShiYu, transferred to Team NII
- Zhou RuiLin transferred to SNH48 Trainee
- Wang ShiMeng
- September 27 - Luan JiaYi, Li MeiQi graduated from SNH48
- October 1 - Liu JuZi graduated from SNH48
- November 17 - Zhang RuiJie promoted to Team NII
- November 19 - Zhou RuiLin promoted to Team NII
- December 20 - Huang TingTing graduated from SNH48
2020
- January 11 - Ma Fan, Xie Ni graduated from SNH48
- January - Feng XinDuo graduated from SNH48
- April 5 - He XiaoYu graduated from SNH48
- May 4 - Yi JiaAi graduated from SNH48
- June 13 - Wang ShiMeng, Zhou RuiLin graduated from SNH48
- September 4 -
- Chen JiaYing graduated from SNH48
- Bai XinYu, Chen QianNan, Hu XiaoHui, Liu ShuXian, Liu Xian, Qing YuWen, Su ShanShan, Yang YuXin, Zhang HuaiJin, Zhang XiaoYing transferred to Team NII
- Jiang ZhenYi transferred to IDOLS Ft
2021
- June 6 - Jin YingYue graduated from SNH48
- July 9 - Shonichi of Team NII 8th Stage
- August 15 - Han JiaLe promoted to Team NII
- September 25 - Lu Ting graduated from SNH48
- October 23 - Zhang Yi graduated from SNH48
