B shares fall on weakening renminbi

Foreign-currency denominated stocks are small part of Shanghai and Shenzhen markets

China's B shares plunged on Monday after the value of the renminbi against the US dollar slid to the lowest in six years.

The gauge of the B shares, the foreign-currency denominated stocks of Chinese companies listed in Shanghai and Shenzhen, tumbled by 6.15 percent to 335.68 points.