Karishma Vaswani, Asia Business correspondent, BBC News If Mr Guo has indeed disappeared, he wouldn't be the first high-profile executive in China's financial sector to have gone missing in recent weeks. There is speculation that this is part of the wider anti-corruption campaign that Beijing launched to clean up various pillars of China's economy - which now includes the financial sector. If Mr Guo is proved to be part of that, then he would be among the most high-profile Chinese businessmen caught up in it. He called himself a student of the US investment legend Warren Buffett, and wanted to
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