Though it will not host the

Apec

Economic Leaders’ Meeting

until November

, the southern Chinese city of

Shenzhen

is already tightening its security, banning travellers on the subway from carrying perfume and imposing a no-fly zone for drones.

The local government said in a notice on Sunday that subway passengers would be scanned and their carry-on items would be X-rayed to “completely ensure travel safety”.

Besides items that have long been banned on the subway, such as explosives, the government said that passengers would not be allowed to travel with large bottles of perfume, open bottles of alcohol, cigarette lighters or pesticides. No end date was announced for the enhanced restrictions.

The rules on scanning and X-raying are not new, the SCMP learned, but previously they were applied flexibly with passengers often just opening their bags to show staff the contents.

Passengers complained on social media that the stricter policies and enforcement had led to long queues, causing some people to be late for work.

Also last week, Shenzhen police said a no-fly zone would be imposed at the centre of the city’s downtown Futian district until November 23.