Chinese markets clocked their best week in almost 16 years as the mainland’s CSI 300 rallied 15.7% this week, buoyed by several economic stimulus measures by the central bank.

China’s problems run deep, but policymakers are changing their tone. Experts are taking note but are still wary as previous moves haven’t worked.

Indexes rallied Thursday amid a surprise fall in jobless claims and promises from China to further invigorate the country's sluggish economy.