Germany urged the Chinese Communist Party (CCP) to withdraw the national security law imposed on Hong Kong and allow international observers access to the Xinjiang region, where Uighurs suffer human rights violations.

German Foreign Minister Heiko Maas spoke to Chinese Foreign Minister Wang Yi, in Berlin on Sept. 1, according to the South China Morning Post (SCMP).

“You know that our concerns about the effects of the security law have not been allayed,” Maas said. “We want the ‘one country, two systems’ principle to be applied as fully as possible.”

Wang responded by justifying the need to dispel the possibility of Hong Kong’s independence saying that the law protected the city’s freedoms.

Maas also referred to the legislative elections in Hong Kong, calling for them to be held “quickly and without hindrance,” according to SCMP.

Another point raised by Maas was the human rights of the Uighur ethnic minority. The Uighurs suffer forced labor, compulsory birth control, and their culture’s disappearance as part of repressive practices by the CCP.

Maas related part of his conversation with Wang in which he said, “We would very much like China to grant an independent U.N. observer mission access to the camps [in Xinjiang],” according to Agence France-Presse (AFP).

At a press conference after bilateral talks, Maas also criticized Wang’s “threats” against Milos Vystrcil, the Czech Senate president’s trip to Taiwan.

In an Aug. 31 event, Wang said that Vystrcil “will pay a high price for his shortsighted behavior and political speculation.”

“If he wants to visit Taiwan to designate it as an independent state, isn’t this a public affront, a public challenge? That is why we must tell, and we have told, the Czech Senate speaker, ‘You have crossed the red line,'” Wang said.

Wang’s threats against Vystrcil caused unrest in several European countries but were not enough to stop him traveling. Vystrcil was given a standing ovation before Taiwan’s Parliament after expressing his support and declaring himself Taiwanese on Sept. 1.

“Please let me also express in person my support to Taiwan and the ultimate value of freedom and conclude today’s speech … with perhaps a more humble, but equally strong statement: ‘I am a Taiwanese,'” Vystrcil said, according to Reuters.