China's economy showed further signs of weakness in April as the slowest growth in retail sales for 16 years highlighted the task leaders have in ramping up domestic demand.

This comes at the same time as China is fighting a painful trade war with the US. 

Authorities have for years been attempting to transition the world's number two economy from being reliant on state investment and exports to a more stable one driven by China's huge army of consumers.

The tariffs stand-off have reinforced the need for such a change. 

But the latest figures today showed that retail sales expanded 7.2% last month, well off the 8.4% tipped by economists in a Bloomberg News survey and a big drop from March.

The figures from the National Bureau of Statistics (NBS) represent the worse pace since 2003, at the height of the SARS crisis. 

The bureau also said growth in industrial production slowed sharply to 5.4% from, while fixed asset investment in the four months to April rose 6.1%. Both missed estimates. 

The readings fanned speculation that authorities will unveil another round of pump-priming measures - having wound back on such stimulus in recent weeks following signs of a bounce in the economy - with Shanghai's composite index jumping over 1% today. 

Beijing has rolled out huge tax-cuts and other measures this year to ramp up the economy and offset the impact of a trade war that has seen the US impose tariffs on hundreds of billions of dollars worth of Chinese goods, causing worries for exporters.