For many investors, yesterday is "black Monday" because the Shanghai Composite Index sank 260 points to close at 3,116 points. During its swings the lowest point was even 3,095. Comments:

The past bull market almost ran mad and it was finally reined in on Monday with the index falling. We hope China's stock market will grow healthily, so that the index rises because companies make a profit, not because capital speculates.

Liu Shuwei, a finance professor at the Central University of Finance and Economics, Jan 20