Bourses take a tumble amid concerns over continued sluggish demand

China's A-share market tumbled on its first trading day of 2019 amid tepid market sentiment and weaker manufacturing data.

Analysts expect the market would likely stage a rebound in the second half of 2019 with more supportive government measures set to bolster confidence.

The Shanghai Composite Index closed at 2465.29 points, ending down 1.15 percent on Wednesday, while the Shenzhen Component Index closed at 7429.27 points, down 1.25 percent.