It is also said that gojichi was more frequent in the Togoku (eastern Japan) where goson-sei was developed, while tokorojichi was more frequent in the Saigoku (western Japan) where business/transportation developed rather than the goson-sei.
また、郷村制が発達した東国では郷質が、郷村制が発達せず商業・交通が盛んであった西国では所質が多かったと言われている。