The CSI300 index of the largest listed companies in Shanghai and Shenzhen rose 0.1 percent to 3,069.11 points, while the Shanghai Composite Index was little changed at 2,832.59.
Analysts said recent commentaries in official media were weighing on market sentiment.
A Monday article in the People's Daily newspaper, regarded as the Communist Party's mouthpiece, said the country may suffer from a financial crisis and economic recession if the government relies too much on debt-fuelled stimulus.
"The market's mood is not so great right now," said Zhang Qi, analyst at Haitong Securities in Shanghai.
"Analysts are still trying to interpret the recent commentary."