China's economy has had a decent growth rate even post-2008 however, the stock market indices appear to be weak and stuck at more or less the same level since long time as shown below for Shanghai, Shenzhen and Hong Kong stock market indices:
Comparing this to US S&P or Dow Jones:
There has been much better growth despite US economy not growing even at half of China's rate. As per conventional understanding, in long run stock markets performance is correlated with economic growth, by this reasoning why China's performance in stock market is so dismal, more like Nikkei index?