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He said China would work with the other members to help the group "meet worldwide expectations, take a clearer stand on major worldwide and regional issues and play a more active role in regional co-operation and global economic governance".
China's "dual freeze" proposal, unveiled previous year during Wang's press conference, involves halting both nuclear and missiles tests in exchange for the suspension of U.S.
"Of course it takes more than one cold day to freeze three feet of ice", he said.
"We can not reveal everything to the media but we do have additional views of North Korea we will relay to the United States when we visit the US", South Korea's head of national security Chung Eui-yong told reporters.
Wang also emphasized what he called the key role played in China's more pro-active foreign policy by President Xi Jinping, who is likely to remain leader indefinitely after the legislature lifts presidential term limits.
Without US, 11 states ink CPTPP
Singapore, for example, will now gain preferential market access to Canada and Mexico, with which it has no free trade agreement. It opens more markets to free trade in agricultural products and digital services around the region.
"China's suspension-for-suspension proposal has proven to be a right prescription for the problem in creating the basic conditions needed for improving inter-Korea relations" Wang said.
The relationship between Seoul and Pyongyang has been ostensibly improving after North Korea chose to join the February 9-25 Olympics in South Korea.
Wang ended his remarks with a warning: while the light is visible at the end of the tunnel, the road ahead will not be smooth.
The book also features the official Chinese version of the "Vision for Maritime Cooperation under the Belt and Road" initiative made public by China's central government in June 2017. In the past, Chinese analysts have suggested that Washington does not truly want to solve the Korea issue, because a lasting peace there would remove the rationale for its bases in South Korea.
Wang ended his comments by calling for all sides to take up their "political courage" and make a "political decision" to pursue dialogue as quickly as possible.
Visiting China in January, French President Emmanuel Macron said Belt and Road could not be "one-way".