Shortly after his arrival, Wang will meet his Japanese counterpart Taro Kono with their talks expected to touch on key subjects such as economic relations, territorial disputes in the East China Sea, and ways to push North Korea to give up its nuclear weapons, Japanese officials have said.
"Of course, the North Korean issue will surely come up in the meeting," he said.
The visit by Wang, a veteran Japan handler who had served as an ambassador to Tokyo, comes as the world's second and third largest economies attempt to ease tension, caused by longstanding disputes over maritime claims and Japan's wartime legacy.
His visit is also seen as paving a way towards Japanese Prime Minister Shinzo Abe's wish to host Chinese Premier Li Keqiang next month for a trilateral summit including South Korean President Moon Jae-in.
Tokyo also hopes to expand its exchanges with China to stay relevant in increasing international efforts to engage with North Korean leader Kim Jong Un. China has demonstrated its significant influence over its reclusive ally with Xi hosting Kim and his wife in Beijing.
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