Well, like i made a point some time ago, there would have been all kinds of "tourists" taking "sunset" pictures around CAC and SAC, then rushing with the pictures back to their employer, so high resolution pictures must be already in the hands of western entities. It's not like PRC is sending someone to follow every foreigner like for instance we see in some DPRK videos. So of course CCMC has it's job to do, but imo there is little reason to actually invite someone to tea for pictures such as this, especially since the J-36 (and even J-50) serenely fly low over multi-million people cities.