Several properties of MXB 221120 in a sample distribution. Panel a: Position of duration (T₉₀) and burst fluence in the sample of FRED MXBs and ERCOD MXBs. The solid lines represent the power-law fitting of the data, and the dashed lines represent the 1σ error region. Panel b: Position of rise time and decay time in the sample of FRED MXBs and ERCOD MXBs. The dotted gray lines indicate the ratio between rise time and decay time. Panel c: Position of kT and flux in the sample of FRED MXBs and ERCOD MXBs. Panel d: Position of α and E_p in the Fermi/GBM sample. Panel e: Position of kT and BB area in the Fermi/GBM sample. The solid lines represent the power-law fitting of the data, and the dashed lines represent the 1σ error region. Panel f: Position of fluence in the Fermi/GBM sample. In panels a–c, the sample is from Wang et al. (2025b). In panels d–f, the sample is from Rehan & Ibrahim (2023, 2024, 2025)