ITV News' China Correspondent Angus Walker reports on why the Mayor is so keen on Chinese tourists visiting London.
Boris Johnson is meeting high-powered investors this afternoon, including those already pumping money into London.
Current investments in the capital by Chinese companies include a £700 million 5 star hotel scheme on the South London Nine Elms site, a large stake in the company that owns Thames Water and the £500 million pound reconstruction of the Crystal Palace.
Chinese companies are also backing the billion pound Chinese business district planned in the Docklands and have a £450 million stake in the holding company that owns Heathrow Airport.
Chancellor George Osborne joked that he and Boris Johnson are like "the yin and the yang" as they both continued their visit to China.
Asked about the timing of their trips which saw the Chancellor and London Mayor in China at the same time, Mr Johnson joked with Beijing students that they were like a "pair of harmonious doves".
The London Mayor was asked who was in charge and he replied: "We are representing our country. It's a nest of singing birds is how I would describe it. It's total harmony, there's probably some Chinese expression that completely perfectly culminates it."
The Chancellor intervened: "The yin and the yang."
Mr Johnson then turned to a Chinese student, asking: "The yin and the yang. What do you say for a harmonious, sounds like one of those Chinese fireworks, a harmonious dove or something like that? A pair of harmonious doves. What is that in Chinese?"
After she looked back blankly, Mr Osborne said: "I think she likes the yin and yang comparatively."
Boris Johnson has this morning addressed students at Peking University as part of his week-long tour to promote foreign investment in London.
The mayor was joined for the speech at the University by the Chancellor, George Osborne.
This afternoon Mr Johnson will meet his counterpart, the Mayor of Beijing and the boss of Wanda Group, who part funded the development of the Nine Elms area in Battersea. He'll also visit a Beijing Hutong and will conclude Day 2 of his trip with a dinner at the Chinese Entrepreneurs Club.
The Mayor of London Boris Johnson has outlined why he believes the Asian economy should invest in London during a speech at Peking University.
London Mayor Boris Johnson has praised the move to simplify and speed up visa applications for Chinese nationals as a "welcome step forward".
Mr Johnson, who is also on a trade visit to China, said he was pleased the Government had listened to him on simplifying the visa system for Chinese people.
He said: "I'm pleased that the Government has listened to the many voices, mine included, who have called repeatedly for a streamlining and simplification of the Chinese visa system.
"The move will hopefully encourage ever greater numbers of Chinese tourists to London. We should be doing everything we can to drive Chinese visitors to our capital."
The Mayor showed off one of London's "Boris bikes" in Beijing, joking about the cycle hire scheme being "communist".