Why should any international reporters be there to cover it?
Well that's why the news isn't reported.
Many stories you see across multiple media sources are by local reporters who are members of an international newsfeed...like Reuters or AP. They submit their story to their local media and also put it on the international newsfeed for other media to pickup.
However if there is nobody who is a member of an international newsfeed in an area like Xinjiang reporting stories...you simply aren't going to see the story being picked up.
The only way you will see it is if some company (like Reuters/AP themselves) writes a story like "..according to a report on Wednesday's Xinhua...such and such happened"
en.wikipedia.org
Founded in 1846, it operates as a
cooperative,
unincorporated association. It produces news reports that are distributed to its members,
...
By 2016, news collected by the AP was published and republished by more than 1,300 newspapers and broadcasters,
[4] English, Spanish, and Arabic. The AP operates 248
news bureaus in 99 countries.
[5] It also operates the AP Radio Network, which provides newscasts twice hourly for broadcast and satellite radio and television stations. Many newspapers and broadcasters outside the United States are AP subscribers, paying a fee to use AP material without being contributing members of the cooperative. As part of their cooperative agreement with the AP, most member news organizations grant automatic permission for the AP to distribute their
local news reports. The AP traditionally employed the "
inverted pyramid" formula for writing, a method that enables news outlets to edit a story to fit its available publication area without losing the story's essentials,
en.wikipedia.org
Reuters employs some 2,500 journalists and 600
photojournalists[19] in about 200 locations worldwide.
[3][4][6] Reuters journalists use the
Standards and Values as a guide for fair presentation and disclosure of relevant interests, to "maintain the values of integrity and freedom upon which their reputation for reliability, accuracy, speed and exclusivity relies"