China has urged the United States to stop using the Hong Kong issue to interfere with its domestic affairs after the US embassy called for the release of 12 Hong Kong fugitives on trial in Shenzhen.
A spokesman for the US embassy in Beijing said in a statement on Monday that the "so-called crime" of these fugitives was to "flee tyranny" and that China will "stop at nothing" to prevent its people from seeking freedom elsewhere.
Chinese foreign ministry spokesman Zhao Lijian told a news briefing that the US remarks "disregard facts".
Mr Zhao also said that China is firmly opposed to these remarks and urged the United States to stop interfering with China's domestic affairs.
The United States called for the "immediate release" of the Hong Kong democracy activists facing trial in China, after they attempted to escape the territory by speedboat for sanctuary in Taiwan.
Ten of the so-called "Hong Kong 12" are due in court in the southern city of Shenzhen facing charges linked to an illegal border crossing.
Chinese authorities took them into custody after their boat was intercepted on 23 August.
At least two of the group face up to seven years in jail for organising the attempted escape from a city where democracy activists last year led massive protests against Beijing's rule.
Some of the group were already facing prosecution in Hong Kong, where China has imposed a draconian national security law that has stamped out the city's protest movement.
"Their so-called 'crime' was to flee tyranny," a US embassy spokesperson at the US consulate-general in Guangzhou told AFP, hours ahead of their scheduled court appearance via video link.
Urging their "immediate release", the spokesperson said "Communist China will stop at nothing to prevent its people from seeking freedom elsewhere."
Families of the accused - the youngest of whom is just 16 - have called for the hearing in the Shenzhen court to be broadcast live, after they were unable to attend due to the short notice for the trial and COVID-19 requirements.
They were only notified of the trial date on Friday, while their lawyers have been barred from meeting with the detainees. Authorities instead have appointed state-approved legal representation.
In a joint letter over the weekend, the families said they "strongly condemn" the authorities' decision to hold the trial in "de facto secret" at Yantian District People's Court.
"We urge governments to send embassy personnel to the hearing to guarantee a proper and fair trial by the courts in Shenzhen," they said, noting that those detained include British, Portuguese and Vietnamese nationals.
The security law that now blankets Hong Kong gives authorities sweeping powers of prosecution for acts deemed terrorism, succession, subversion or collusion with foreign entities.
The city had enjoyed unique freedoms since its handover from former colonial power Britain in 1997, with a deal promising a "one country, two systems" arrangement for 50 years.
Beijing says the new security law was needed to restore peace and stability but critics have condemned it as a fatal attack on Hong Kong's freedoms.
China has a history of putting dissidents on trial around the Christmas and New Year period to avoid Western scrutiny.
Amnesty International said there was little chance the group would receive a fair trial.
"They have so far been deprived of their basic rights, including the right to defend themselves through legal representation of their own choosing," Amnesty Hong Kong's Programme Manager Lam Cho Ming said in a statement.
Eight of the group are accused of an illegal border crossing, while two are suspected of organising for others to cross the border.
Two minors face non-public hearings.
Since Beijing's imposition of the security law in June, Taiwan has emerged as a sanctuary for Hong Kong activists - quietly turning a blind eye to residents turning up without proper visas or paperwork.
