BEIJING, Jan. 21 (Xinhua) -- Chinese stocks closed mixed on Tuesday, with the benchmark Shanghai Composite Index down 0.05 percent to 3,242.62 points.
The Shenzhen Component Index closed 0.48 percent higher at 10,305.69 points.
The combined turnover covered by these two indices stood at around 1.21 trillion yuan (about 168.09 billion U.S. dollars), up from 1.18 trillion yuan on the previous trading day.
Stocks related to the humanoid robotics and AI-powered smart glass sectors led the gains, while the education and transgenic technology sectors suffered significant declines.
The ChiNext Index, tracking China's Nasdaq-style board of growth enterprises, gained 0.36 percent to close at 2,112.39 points. ■