(Yicai Global) Oct. 21 -- China's mainland stock markets started the day a tad higher this morning amid cautious market sentiments after yesterday's growth stock surges.

The Shanghai Composite Index opened 0.12 percent up at 3,332.15. The Star Market Board 50 Index, or Star 50, climbed 0.07 percent to 1427.24.

The Shenzhen Component Index began at 13,613.87, up 0.07 percent. The ChiNext Price Index, which tracks growth enterprises in Shenzhen, rose 0.22 percent to 2,746.73.

Editor: Emmi Laine