I don't understand why Chinese historians don't seem to have been engaged here? I get finding the American reference source, but then the research just seems to leave it at that.
Is this the scope of the site - just investigating local sources for quotes?
I think the site editor is a native English speaker, and I don't think the site has a team of speakers of other languages to help investigate non-English quote origins.
Is this the scope of the site - just investigating local sources for quotes?