The following figures and data show the essence of NaF by combining NaF with FSSH. (For detailed discussion please see ref1).

Figure S13. Each panel is identical to that in Figure 1 of the main text, but for comparison among FSSH, NAF, and FS-NAF. Black points: Exact results produced by eHEOM. Orange short-dashed lines: FSSH. Red and green solid lines: NAF (