Chinese stocks tumbled on Wednesday alongside their Hong Kong peers, as investors sought to profit from a blistering rally, which was dampened by the lack of powerful stimulus measures to revive the economy.

Chinese stocks came under pressure on Tuesday after a disappointing update from the government tempered some of the exuberance that has propelled Chinese equities out of a bear market in recent weeks.

China is back to work after the fall "Golden Week" holiday, and the sheen is coming off a recent market rally. A briefing from the country's top economic planner, the National Development and Reform Commission,