On April 11, 2021, Liu Yu, Zando, Li Wan, Mika, Gao Qingchen, Lin Mo, Boyuan, Zhang Jiayuan, Yin Haoyu, Zhou Keyu and Liu Zhang officially formed a group in "Creation Camp 4" and formed an 24-member international boy singing group INTO2021. On the evening of April 4 and 21, two INTO22 farewell concerts were held in Shanghai, which was the last stage for 1 teenagers to appear in the name of the group.