Amid growing fears that China could intervene to stop protests in Hong Kong, the Chinese military has released a promotional video touting its “anti-riot” abilities – and the head of the country’s forces in the territory has said further unrest should not be tolerated.

In the video, soldiers from the Hong Kong Garrison of the People’s Liberation Army can be seen aiming sniper rifles and rappelling from helicopters as part of mass drills.

In one sequence, the three-minute clip shows armed soldiers in riot gear firing tear gas and water cannons at people dressed up as civilian demonstrators – complete with the masks and helmets seen in the real-life unrest that began two months ago.

In scenes that have close parallels to the recent street clashes, soldiers hold up red warning banners declaring: “Stop Charging Or We Use Force”, and one soldier can be heard shouting in Cantonese: “All consequences are at your own risk.”

The video also shows troops laying barbed wire coils on mock city streets as armoured personnel carriers with battering rams race forward, and culminates in soldiers leading handcuffed “civilians” away.

Turbulent protests continue in Hong Kong: In pictures Show all 40 1 /40 Turbulent protests continue in Hong Kong: In pictures Turbulent protests continue in Hong Kong: In pictures An anti-extradition bill protester pour water on tear gas as they attend a march in Hong Kong Reuters Turbulent protests continue in Hong Kong: In pictures Police restrain an angry passenger who tried to fight with protesters who interrupted subway services during the morning commute in Hong Kong on July 30 AP Turbulent protests continue in Hong Kong: In pictures Protesters face off with police during the latest in a series of demonstrations against the controversial extradition bill in Hong Kong on July 28 AFP/Getty Turbulent protests continue in Hong Kong: In pictures Protesters are seen in a stairwell after one is injured by police during the latest in a series of demonstrations against the controversial extradition bill in Hong Kong on July 28 Getty Turbulent protests continue in Hong Kong: In pictures Riot police fire tear gas at protesters during the latest in a series of demonstrations against the controversial extradition bill in Hong Kong on July 28 EPA Turbulent protests continue in Hong Kong: In pictures Two police officers are surrounded by protesters on a subway platform in Hong Kong on July 30 AP Turbulent protests continue in Hong Kong: In pictures Police officers form a barricade during the latest in a series of demonstrations against the controversial extradition bill in Hong Kong on July 28 Reuters Turbulent protests continue in Hong Kong: In pictures Protesters employ the help of road signs to form a barricade during the latest in a series of demonstrations against the controversial extradition bill in Hong Kong on July 28 Reuters Turbulent protests continue in Hong Kong: In pictures A medic is attended to after being injured by police during the latest in a series of demonstrations against the controversial extradition bill in Hong Kong on July 28 Getty Turbulent protests continue in Hong Kong: In pictures Protesters are seen wearing helmets on a subway train in Hong Kong on July 30 Reuters Turbulent protests continue in Hong Kong: In pictures Protesters smash glass doors and windows of the Legislative Council Complex in Hong Kong. Anti-extradition protesters broke into the the city's legislature and thousands more gathered to march in opposition to the city's China-backed government during the 22nd anniversary of Hong Kongs return to Chinese rule Getty Turbulent protests continue in Hong Kong: In pictures Police fire tear gas at protesters near the government headquarters AFP/Getty Turbulent protests continue in Hong Kong: In pictures A protester defaces the Hong Kong emblem AFP/Getty Turbulent protests continue in Hong Kong: In pictures Protesters try to break into the Legislative Council of Hong Kong during a protest on the 22nd anniversary of the handover of the territory to China from Britain on July 1 Reuters Turbulent protests continue in Hong Kong: In pictures Black-clad riot police fired tear gas as they charged anti-government protesters in the early hours of the morning AFP/Getty Turbulent protests continue in Hong Kong: In pictures A general view of the main chamber after protesters break into the Legislative Council building EPA Turbulent protests continue in Hong Kong: In pictures Protesters graffiti the Legislative Council Complex Getty Turbulent protests continue in Hong Kong: In pictures Police fire tear gas at protesters near the government headquarters in Hong Kong on July 2, 2019. - Riot police fired tear gas as they attempted to dislodge anti-government protesters in the early hours of the morning of July 2 in chaotic scenes in the heart of Hong Kong. (Photo by Anthony WALLACE / AFP)ANTHONY WALLACE/AFP/Getty Images ANTHONY WALLACE AFP/Getty Turbulent protests continue in Hong Kong: In pictures Inside the Legislative Council building EPA Turbulent protests continue in Hong Kong: In pictures Protesters put up a sign AFP/Getty Turbulent protests continue in Hong Kong: In pictures Members of the press take pictures of a protest banner that says 'there are no violent people, only violent governance' EPA Turbulent protests continue in Hong Kong: In pictures Protesters storm the Legislative Council building during a protest in Hong Kong on July 1 Reuters Turbulent protests continue in Hong Kong: In pictures A protester forces their way through a window into the Legislative Council building in Hong Kong on July 1 Reuters Turbulent protests continue in Hong Kong: In pictures Police officers look out from behind windows damaged by protesters in the entrance to the Legislative Council in Hong on July 1 AFP/Getty Turbulent protests continue in Hong Kong: In pictures Police officers stand guard behind the entrance to the Legislative Council in Hong Kong as protesters try to force entry. One officer holds a sign that reads: "Stop charging or we use force" EPA Turbulent protests continue in Hong Kong: In pictures Protesters storm the Legislative Council building during a protest in Hong Kong on July 1 Reuters Turbulent protests continue in Hong Kong: In pictures Protesters wield makeshift shields during a clash with police on the 22nd anniversary of the territory's handover to China from Britain on July 1 Getty Turbulent protests continue in Hong Kong: In pictures Protesters holding umbrellas face-off against riot police in Hong Kong on July 1 AP Turbulent protests continue in Hong Kong: In pictures Protesters smash a window of the Legislative Council building in Hong Kong on July 1 AFP/Getty Turbulent protests continue in Hong Kong: In pictures A protester wielding a makeshift shield looks back at the damage caused to the Legislative Council building in Hong Kong on July 1 Reuters Turbulent protests continue in Hong Kong: In pictures Protesters gather to take part in the annual pro-democracy rally that is held in Hong Kong on the anniversary of the handover of the territory from Britain to China on July 1 AFP/Getty Turbulent protests continue in Hong Kong: In pictures Police officers use force in an attempt to disperse protesters during a protest in Hong Kong on the 22nd anniversary of the handover of the territory from Britain to China on July 1 Reuters Turbulent protests continue in Hong Kong: In pictures Anti-extradition bill protesters stand behind a barricade near the Legislative Council of Hong Kong on July 1 Reuters Turbulent protests continue in Hong Kong: In pictures Police officers look out from behind windows damaged by protesters in the entrance to the Legislative Council in Hong on July 1 AFP/Getty Turbulent protests continue in Hong Kong: In pictures Protesters try to break into the Legislative Council of Hong Kong during a protest on the 22nd anniversary of the handover of the territory to China from Britain on July 1 Reuters Turbulent protests continue in Hong Kong: In pictures Protesters rest outside the Legislative Council in Hong Kong on July 1 EPA Turbulent protests continue in Hong Kong: In pictures A protester shouts in front of police outside the Legislative Council in Hong Kong on July 1 AFP/Getty Turbulent protests continue in Hong Kong: In pictures A group of anti-extradition bill protesters holding umbrellas gather outside the government headquarters in Hong Kong on July 1 AFP/Getty Turbulent protests continue in Hong Kong: In pictures A protester waves a black version of the Hong Kong flag outside of the Legislative Council of Hong Kong on July 1 Getty Turbulent protests continue in Hong Kong: In pictures Anti-extradition bill protesters march in Hong Kong on the anniversary of the territory's handover to China on July 1 Reuters

The footage was posted on an official social media account by the Hong Kong Garrison, ostensibly to mark the 92nd anniversary of the founding of the Chinese army.

And in a speech honouring the same event, the garrison’s most senior commander Chen Daoxiang gave his first comments regarding the violent clashes that have become a regular occurrence in the city. Citizens are protesting against an unpopular extradition bill that has spiralled into a general display of unhappiness with the Hong Kong government.

Chen said the protests were “absolutely impermissible”, according to the state-run China Daily newspaper, and were “putting the bottom line of the ‘one country, two systems’ principle to the test”.

Protesters’ actions had “seriously threatened the life and safety” of the city’s people, he said, and the army stood ready to “resolutely safeguard” the country’s sovereignty and security, as well as Hong Kong’s stability.

It comes after China staged mass military drills in the southern Guangdong province, which neighbours Hong Kong, fuelling concerns over a large scale intervention.

A US official said the White House was monitoring a potential buildup of Chinese troops on the border with the city, which was handed over from Britain to Chinese rule in 1997.

Analysts still believe China has a number of options to exhaust, including a change of administration in Hong Kong, before it would resort to a military intervention.

Steve Tsang, director of Soas University’s China Institute in London, told The Independent last month that “we are thankfully still far from such a scenario”.