The Chinese ambassador in Berlin was summoned for urgent talks over media reports that Russian soldiers were being trained in China, the German foreign ministry said on Friday.
These "deeply disturbing" reports point to support for Russia from Chinese state actors, in particular the Chinese People’s Liberation Army, it said.
The envoy was summoned on Thursday, it added.
"Anything that enables Russia to continue its war of aggression against Ukraine also represents a threat to our security," the ministry said.
The German government regularly stresses its concern over China's support for Russia.
