Officials have cited public security for the new rules, which also forbid bringing unmanned aerial vehicles (UAVs) or their core components into Beijing.

E-commerce platforms will be banned from shipping UAVs to Beijing, though drone owners who have completed real-name registration of their gadgets before May 1 will be allowed to take them in and out of the capital.

Drone users in the city of 22 million will have three months after the new rules kick in to register their devices with local police stations.

Several sellers across the city had already removed drones from displays ahead of the rules change, AFP saw Tuesday. An employee at a DJI outlet in central Beijing said the gadgets were being boxed up for transport to other cities.

DJI, which is the world's largest drone maker and has been sanctioned by the US government over security concerns, is dominant in the Chinese market but now faces being locked out of its home capital by the new rules.

The city's airspace will be closed to all drone flights without prior approval from authorities, with fines of up to 10,000 yuan ($1,463) for illegal flights and possible confiscation of the drone.

Organisations or individuals caught selling drones or 17 core components will also face fines under the new rules.

- 'One-size-fits-all' -

Drone storage rules will also be tightened in the capital, with individuals allowed to keep at most three drones at a single location within Beijing's sixth ring road.

Online, many users complained that the new rules were onerous and left them with few opportunities to fly their gadgets in Beijing.

"This is a crazy one-size-fits-all system," one user wrote on the social media platform WeChat.

Others said they would sell their drones ahead of the new rules.

At one drone-flying school in central Beijing, staff told AFP they were worried about how they would acquire new drones or components when their stock breaks or needs maintenance.

But they hoped that educational and sports facilities like theirs would eventually receive some exemption from the rules.

The new regulations hold that exemptions may be provided for special purposes like counter-terrorism, agriculture, education and sport.

"As the capital, Beijing faces more challenges in low-altitude airspace safety, making it more urgent to strengthen the management of UAVs," Beijing municipal official Xiong Jinghua said when the rules were announced in March.

National laws have also been tightened this year in China, with illegal drone flights now punishable by up to 15 days detention and UAVs required to provide real-time data to authorities during flights.