A caution for those of us who are tempted to label all of these transactions (and some of them certainly deserve skepticism and scrutiny) as "money laundering" or "black money." 

Bear in mind: some of the push to move assets overseas comes from Chinese business owners or citizens who seek to protect their assets from the reach of the Chinese Communist Party, and I'd be skeptical of taking the CCP's word on which funds are legitimate, and which are not. The CCP has frozen assets and expropriated the assets of dissidents in the past.