I conclude as such from observing what the Chinese have offered for export, which are clearly made known to the public through various models and infographics at defense exhibition. While some export-oriented designs certainly share ancestry with PLAN vessels (e.g. the Type 054A, and S20), not all PLAN ships have been displayed at trade shows, and thus, oriented for export.
Anything else beyond that, including all the "best buddies forever" talk, stems from personal (and wishful) opinion.
If I were a "false flagger" as you so claim, why would I be so dull to blow my cover with a simple avatar pic?