Australia's prime minister asked China for information to arrest writer Yang Hengjun in January and objected to his conditions.

Prime Minister Scott Morrison today announced that Australia wants China to provide clear information about the arrest of scholar Yang Hengjun and ensure that he has access to lawyers and family members.

Morrison said Australia was concerned because scholar Yang was "detained" for a long time, and vowed to do everything to ensure the rights of his citizens.

Australian Foreign Minister Marise Payne said on the same day that consular officials had recently visited Yang and found his condition "unacceptable". Yang is isolated, interrogated daily and sometimes shackled.

Sarah Condon, one of Yang's lawyers, said the Chinese Ministry of State Security gave him many medicines every day because they diagnosed him with blood pressure and kidney problems.

"We are concerned because Yang is a healthy person. Now he is being diagnosed with a purposeful disease and given medication every day," Condon said.

Yang Hengjun, 54, an Australian political writer and commentator, was arrested in January at the airport when he and his wife and children returned to Guangzhou from the US. After months of detention, China issued an arrest warrant on Yang on suspicion of espionage.

In late January, Foreign Minister Wang Yi said Yang was suspected of "engaging in criminal activities that endanger China's national security". Australian Foreign Minister Marise Payne has mentioned this issue 5 times to her counterpart Wang Yi in person and in person. She expressed "deep disappointment" when Yang was taken to a criminal prison in July.

Australia's public accusation action today may cause China, its biggest trading partner, to react negatively. Australia-China relations have become increasingly serious in recent years, since Canberra accused Beijing of trying to intervene in internal affairs.

The Australian Security Intelligence Agency (ASIO) last month opened an investigation into allegations that China tried to spy in parliament. ASIO earlier this year warned that the threat of foreign intervention is "unprecedented" and the number of foreign spies in Australia is now higher than during the Cold War.