From BBC News:
A fall in Chinese shares is a real possibility amid “risks of market euphoria”, according to a report from Goldman Sachs.
It warns that optimism and speculative trading have pushed share prices ahead of market fundamentals. If speculative activity continues among retail investors, it says that the market could develop into a bubble.
The Shanghai Composite Index is at a record high having breached 4,000 for the first time on Wednesday.[Full Text]