The [O III] VVD diagram of AGNs. Type 1 AGNs are plotted in red, while Type 2 AGNs are plotted in blue. The mean velocity shift in each σ_{[O III]} bin is denoted by red (Type 1 AGNs) and blue (Type 2 AGNs) circles. The normalized histograms of V_{[O III]} and σ_{[O III]} are shown in the top and right panels for Type 1 (red) and Type 2 AGNs (blue).