China's factory activity surprisingly expanded in March, government data showed on Wednesday, but analysts are still betting on more easing measures to come, to prevent growth from slipping further.

The official Purchasing Managers' Index (PMI), the bellwether of large industrial firms, rose to 50.1 in March from February's 49.9, a touch above the 50-mark that that separates growth from contraction. A Reuters forecast had expected a figure of 49.8.