Investment is expected to bolster infrastructure and increase living standards in rural areas. This in turn will support long-term growth by boosting consumption as Beijing realigns the economy, Moody's said.

Steps to ease credit have also helped companies benefit from lower borrowing costs, paving the way for the property sector to invest more in infrastructure projects.

To help stimulate investment, economists expect another interest rate cut by the end of 2015 or early next year.

On Oct 24, the People's Bank of China, or central bank, lowered the one-year benchmark bank lending rate by 25 basis points to 4.35 percent.

"More monetary policies are likely to be introduced in the fourth quarter, including cuts on the reserve requirement ratio (the amount banks must hold in reserve) and the benchmark interest rate," Goldman Sachs Group Inc said in a note.

"Decision-makers are also likely to accelerate approvals on infrastructure projects."