In line with new security regulations starting July 29 and until the end of the Paralympics in September, all bags and even small purses must pass through security checks.
K-9 police units have been deployed at all subway stations. In addition to weapons, ammunition, explosives, and flammable and poisonous materials, other items banned in the subway include bicycles, TV sets and any objects longer than 1.8 meters (5.9 feet), according to the Beijing Times.
Those who refuse to pass security checks will not be allowed to travel in the subway.
Beijing will host the 29th Summer Olympic Games on August 8-24 and the 13th Paralympics on September 6-17.
The subway has eight lines, of which three opened earlier this month, spanning 200 km (125 miles) of track, with 123 stations. Officials say that during the Olympics, daily passenger flow in the subway may reach 5.8 million people compared to the current daily average of 3.5 million.
