Earlier on Tuesday, a spokeswoman for the US embassy in Beijing called on Chinese authorities to not only release Liu but also to allow his wife, out of house arrest, providing them with freedom of movement and access to medical services. US Senator Marco Rubio also called on US President Donald Trump to seek Liu's immediate humanitarian transfer to the United States.
"It is China's internal affair, and any country does not have a right to intervene in China's domestic affairs and make unfounded statements. China is a law-based state, where everyone is equal before the law. All the other countries should respect China's judicial sovereignty and should not intervene in interior affairs under the pretext of so-called individual cases," Lu said at a briefing, stressing that there was a special legislation regulating the movement of Chinese citizens who want to leave the country.
Liu was tried for "inciting subversion of state power" in 2009, a year after publishing the Charter 08 manifesto calling for overhauling democratic reforms in China. He was subsequently convicted and sentenced to 11 years in prison. In 2010, he was awarded the Nobel Peace Prize, triggering a massive diplomatic row between China and Norway. His prison term is expected to be completed by 2020.