The Rise and Fall of the Chinese Economy.
If by 'fall' he means 5.5% GDP growth instead of 7%.
Maybe a lot of this doom and gloom comes down to a a simple math misunderstanding, which is that 'slowing growth' is not the same as shrinkage. Slowing growth implies the second derivative is negative, but the first one is still positive, meaning the size of the economy is still expanding. An example is the function ln(1+x)
Rather, his video does a good job of explaining what could go wrong, but I'm not sold on the idea that there's a crisis now. I would not be surprised if this blows over in a a couple months like it did in the past during past concerns over China.