(Yicai Global) Feb 13 --  China's mainland stock markets started the day almost flat after yesterday's gains, which pushed the growth stock-heavy ChiNext Price Index to a more than three-year high. 

The Shanghai Composite Index opened 0.01 percent up at 2,927.14, while the Shenzhen Component Index was down 0.04 percent at 10,936.50. The ChiNext started 0.21 percent lower at 2,080.82.