Yes I just skipped through the video so I might have missed that. Chinese public debt only has increased from a base line of about 35% (pre-2008) to around about 45% today.
You can compare the scenario with the US here:
http://www.tradingeconomics.com/china/government-debt-to-gdp
http://www.tradingeconomics.com/united-states/government-debt-to-gdp
I was talking about total debt, where the ratio for China has increased drastically over the past 10 years now (approx from 150% to 280%).
There are many options for the Chinese govt should major trouble unfold down the road (mostly private debt based). It will all be about maintaining the best balance for the people of China and banks of China should it happen....rather than be skewed so heavily in the US case to the banks.
If drastic (final case, nothing else worked scenario) measures are needed, they do have a huge stockpile of US dollar reserves. That would effectively test (for the entire world and not just China) what the depth of US dollar seigniorage actually is....both sides would face much pain....but the important thing to realise the risk/reward ratio is much higher for the US compared to China in this situation....a huge part of the US economy (finance based) would collapse....because you cant have your cake and eat it (the US printed the money exploiting its seigniorage, it cant suddenly abandon it in such a terrible situation without making it even worse for itself).
But anyways, the Chinese state finances are in pretty robust and solid shape...but they must be wary about their private sector based asset bubbles....especially high job level + job inelasticity based ones. I am sure its the primary research the Chinese govt has had underway for some years now.