It looks like there's an ADM3 for Lingwu City (1803447), but no PPL. I think locals refer to the area as Lingwu, so that might make sense to have a PPL.
Per wikipedia: "Lingwu is a county-level city of Ningxia Hui Autonomous Region, Southwest China, it is under the administration of the prefecture-level city of Yinchuan. It is the most important industrial city of Ningxia."
The PPL for Lingwu was changed to become the PPLA3 of Dongta (1803449) in 2013. I think Dongta is referring to Dongtazhen, which is located within the Lingwu area. The Dongta PPLA3 references Lingwu as an alternate name and links to the Lingwu wikipedia page.