I am investigating in manipulations by Peoples Republic of China in Wikipedia. Many of my articles were reverted without any arguments and it seems that there are many accounts involved.

This seems to be a new phenomen of the 50 Cent Party (Chinese internet commentators)

https://en.wikipedia.org/wiki/50_Cent_Party

https://de.wikipedia.org/wiki/Wikipedia:Schiedsgericht/Anfragen/Auffälliges_Lösch-_bzw._Kommentarverhalten_bei_kritischen_Artikeln_über_die_Volksrepublik_China