China's President Xi Jinping strongly warned against dissent as the protests in Hong Kong continue and any attempt to divide China ends in "crushed bodies and broken bones".
His comments came during a state visit to Nepal On Sunday, China's state broadcaster CCTV reported.
Several peaceful rallies in Hong Kong led to clashes between riot police and protesters on Sunday.
Public transportation and shops operating in Beijing were damaged.
Several neighborhoods By Sunday afternoon, at least 27 MTR stations ̵
The police said they used "minimal force" to disperse the protesters, but the television footage showed weekend shoppers trapped in chaos.
Some were filmed screaming and apparently injured as officials rushed into a mall.
According to Reuters, the riot police were evicted with signs from a mall by singing shoppers taking the side of the demonstrators.  Petrol bombs were thrown at the Mong Kok Police Station and a police officer was torn to the neck, according to the authorities. He is in stable condition in the hospital, reports the South China Morning Post.
A second man was allegedly beaten by protesters who found a baton in his pocket and believed they were a covert policeman.
The embedding of police in the demonstrators has paid tactical dividends to the Hong Kong force, and paranoia has spread among the protesters mainly to young activists.
Overnight on Sunday, a group of protesters dragged a three-meter high statue of a demonstrator to Lion Rock, a prominent promontory overlooking Hong Kong.
The statue, Lady Liberty, has become a symbol of rallies wearing a gas mask, goggles and a helmet.
She is an injured demonstrator whose demonstrators believe she was shot in the eye by a police bullet.  The group of several dozen, some of them headlights, climbed the 500-meter summit during a thunderstorm. The statue contained a black banner with the inscription: "Revolution of our time, liberate Hong Kong."
Hong Kong protests began in June against proposals to allow extradition to mainland China. A move that many feared would undermine the city's independence and jeopardize dissidents.
The bill has long since been withdrawn, but the protests have widened to include calls for full democracy and an investigation into demands for police brutality.
Earlier this month, the city government issued a colonial emergency law banning face masks from public rallies – but protesters swore to oppose it.
More than 2,300 people have been arrested since the beginning of civil disobedience.