Short selling by international investors is another sign that there are risks building up in China's economy

Due to the negative outlook on China's economy held by some international rating agencies, international investors such as JP Morgan Chase & Co and Citigroup recently launched a new round of short selling Chinese shares, causing the Shanghai Composite Index to drop to 2177.91 points on April 26 and fluctuate around 2220 points in the following trading days.

The tumbling A-share market has aggravated market panic and caused some to denounce such short selling as a plot by international investors to buy into China's stock market at cheap prices by spreading pessimism about China's economy first.