All Hong Kong’s pro-democracy lawmakers have resigned after Beijing forced the removal of four of their colleagues.
On Wednesday Beijing passed a resolution allowing the city’s government to dismiss politicians deemed a threat to national security.
Shortly afterwards the opposition lawmakers said they would leave the city legislature in solidarity.
For the first time since Hong Kong was handed back to China in 1997 the body has almost no dissenting voices.
BBC China correspondent says the legislature was already stacked in favour of the pro-Beijing camp.
The dismissal of the four legislators is viewed by many as the latest attempt by China to restrict Hong Kong’s freedoms – something Beijing denies.
China introduced a controversial and far-reaching national security law in Hong Kong in late June, which criminalised “secession, subversion and collusion with foreign forces”.