The basic interest paid on bank deposits increased by a quarter of a point, to 3 percent from 2.75 percent.

That handed Deng and his fellow investors an annualised return of 40 per cent, more than 13 times the benchmark one-year deposit rate, according to the website.

Since China's central bank announced on the 16th, down one-year RMB loans benchmark interest rate 0.27 percentage points, deposit rates remain unchanged.