BEIJING, Oct. 10 (Xinhua) -- Chinese share prices tumbled 3.8 percent at opening on Friday to break the 2000-point mark amid global market slump.

The Shanghai Composite Index opened at 1985.96 points, down 78.62 points or 3.8 percent from the previous closing. The smaller Shenzhen Component Index opened 6482.19 points, down 276.03 points or 4 percent from Thursday's closing 6758.22 points.

On Thursday, Chinese shares closed 0.84 percent lower, falling for the fourth consecutive day since Monday when the Chinese stock market resumed trading after the weeklong National Day holiday.