Peking, (TV: Marco Polo) or Beijing, (TV: The End of Time) was the capital of China at many points in its history. In the 13th century, the Imperial Palace of Kublai Khan was located there. (TV: Marco Polo)
During the late 19th or early 20th century, the First Doctor and his granddaughter Susan Foreman visited Peking during the Boxer Rebellion and used smoke bombs to escape. (AUDIO: The Flames of Cadiz)
In the 1970s, Sir Reginald Styles flew to Peking to persuade the Chinese not to drop out of the World Peace Conference. (TV: Day of the Daleks)
In 1996, a Festival of Ghana was reported to be cancelled by Peking. (TV: "Journey into Terror")
During the Year That Never Was, Martha Jones claimed to have gone to the city to collect one of the vials of liquid needed to arm the gun she was allegedly preparing to kill the Saxon Master with. (TV: Last of the Time Lords)
Beijing was one of ten major cities across the world, all of which had underground railways, where Coldfire Construction built a reactor within a period of 18 months as part of a plot by the Slitheen to drain the Sun's energy, operated by at least one Slitheen disguised using a skin suit made from a local. At somepoint in 2008, after Sarah Jane Smith foiled the Slitheen with the help of her friends at Park Vale Comprehensive School at Ealing in London, she contacted UNIT so they would clear up the Coldfire sites. (TV: Revenge of the Slitheen)
In the 51st century, Mr Sin was made in Peking for Ingrid Bjarnsdottir, the commissioner of the Icelandic Alliance. (TV: The Talons of Weng-Chiang, AUDIO: The Butcher of Brisbane)