The question whether Beijing will tolerate another stock market bubble – one which it appeared to carefully cultivate until now – got an answer on Friday when Chinese stocks crashed, tumbling the most in five months. And it all started with a single sell rating.

The Shanghai Composite tumbled 4.4% to close below the key 3,000 point level, ending an 8 week rally, with the Shenzhen Composite and Chinext all following. Read More.