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Beijing is the most populous city and capital of China. The city was the residence of the emperors of China, including Puyi, the last emperor, giving the Janus branch of the Cahill family influence in the city. The Tomas branch also established strongholds in Beijing in 2008 (the site of that year's Summer Olympics) to search for the Janus Clue Silk and in 2022 (the site of that year's Winter Olympics) for unknown purposes.