Because it refers to the Korean women's group NMIXX. Stubborn powder naturally refers to fans of Korean women's group NMIXX.
NMIXX*** has seven members. On February 22nd, 2022, NMIXX released the single album "ADMARE" with the title song "O.O.", and NMIXX announced its official debut.
NMIXX Women's Troupe is a brand-new song and dance group launched by JYPENT Company in 2022. The NMIXX women's team is headed by HAEWON (Wu Haiyuan), and its members are LILY (Park Jin), SULLYOON (Xue Yunya), Jin Ni (Cui Yunzhen), BAE (Pei Zhen), JIWOO (Ji-woo Kim) and KYUJIN (Zhang Guijin).