You're treating fascism like it's champagne vs. sparkling wine. Fascism as a concept is broader than Mussolini, just like socialism is broader than Marx.
As for Belt and Road, the global south increasing in south-south trade facilitates their development, and when they develop unequal exchange is undermined, as is imperialism in general. This is why the US Empire is more desparate to re-assert dominance, because it is losing its hegemony.