On Saturday, Wang gave the most dire assessment on the world economy from a senior Chinese policymaker to date.
"The one thing that we can be certain of, among all the uncertainties, is that the global economic recession caused by the international financial crisis will be chronic," he was quoted as saying by the official Xinhua news agency.
The remarks weighed on Chinese and Hong Kong stocks, while world markets were also weak as investors fretted over the euro zone debt crisis.
"Chinese Vice Premier Wang Qishan, who oversees trade and finance, said this weekend that the global economic situation is "extremely serious" and his country would focus on domestic challenges, state media reported.
"In a time of uncertainty the only thing we can be certain of is that the world economic recession caused by the international crisis will last a long time," he was quoted as saying."