(Yicai Global) Jan. 21 -- China's mainland stock markets finished the morning session higher as three major US stock indexes' all-time highs yesterday continued to sustain the upbeat investment sentiments.

The Shanghai Composite Index closed up 1.3 percent to 3,629.61 by the lunch break. The Star 50 Index, which tracks tech stocks on Shanghai’s Nasdaq-style board, climbed 0.61 percent to 1,490.56.

The Shenzhen Component Index rose 1.85 percent to 15,505.29. Shenzhen's ChiNext Price Index surged 2.24 percent to 3,276.57.

Editor: Emmi Laine