China’s first operational aircraft carrier Liaoning has arrived in Hong Kong.
Its first trip outside mainland China is part of the events marking the 20th anniversary of Hong Kong’s handover from Britain to China.
Its follows Xi Jinping’s visit last week, his first as Chinese president.
During his trip, which was marred by protests, he warned that any challenge to the Beijing central government was “impermissible”.
Hong Kong’s political climate has grown tense in recent years with increasing calls for self-determination and even independence.
In 2014, Beijing said it would allow direct election of the city’s leader, but only from a list of pre-approved candidates. That lead to mass protests – known as the umbrella demanding universal suffrage.
Mr Xi’s visit to the city came amid tight police security. Following his departure on Saturday, thousands of people marched in an annual event calling from more democracy.
The Liaoning’s presence has been viewed by some as a show of force by Beijing, but many in Hong Kong have also queued for free tickets to tour the ship.
It is accompanied by three warships, and will be anchored near Hong Kong’s Tsing Yi island for five days.
China watchers say its very presence is an unprecedented show of military force in rebellious Hong Kong. That it will be open to the public is an additional demonstration of China’s soft power.
The 300m (990ft) aircraft carrier is a refurbished Soviet ship of the Kuznetsov class purchased from Ukraine and was built in the late 1980s.
It is part of a larger effort by Beijing to boost its military presence on the global stage.
In April, the country launched another aircraft carrier – its first to be made domestically. It is expected to be operational by 2020.