In a speech at Beijing University at the start of his two-day visit, Mr Geithner reassured his Chinese hosts that they need not worry about the estimated $770bn (£475bn) they have invested in US treasuries, a class of US government debt.
"Chinese financial assets are very safe," he said, drawing laughter from the audience.
http://news.bbc.co.uk/2/hi/asia-pacific/8076642.stm