使用geom_sf（）时如何在多个图中保持比例一致？

I've made series of plots, and the range of values differs from plot to plot, so the scales among plots are different from one to another. I'm trying to keep the scale consistent(from 0 to 130000), so I set midpoint=6500, but it seems that it does not work.I've made series of plots, and the range of val