The benchmark Shanghai Composite Index fell 0.45 percent, or 14.73 points, to 3,287.68.
But the Shenzhen Composite Index, which tracks stocks on China's second exchange, edged up 0.35 percent, or 5.90 points, to 1,677.97.
China's consumer price inflation jumped to 1.4 percent in February, the government said, compared with 0.8 percent in January.