For decades, international broadcasts from Beijing were broadcast via the medium wave installation at Ürümqi [a.o.1521 kHz/Ed] all the way to Europe. That could be over now.
Since original information on such topics cannot be obtained, only a collection of reception observations compiled by the British DX Club remains. Accordingly, the large medium waves in Hutubi, about 60 km northwest of Ürümqi, seem to have not been active for months. (Google translation from German)
Kai Ludwig to Radio Eins Radio-News (2021-09-09)