Japan's Nikkei share average raced to a seven-week high on Wednesday morning as risk sentiment recovered after Wall Street rose overnight on earnings hopes, lifting shares across the board.

Also helping the mood was easing political tensions on the Korean peninsula after a senior US official said CIA Director Mike Pompeo made a secret visit to North Korea over the Easter weekend and met with North Korean leader Kim Jong Un.

The Nikkei rose 1.2 per cent to 22,109.48 in midmorning trade, after hitting a high of 22,136.21, its strongest level since February 28.

Index-heavy stocks such as Fast Retailing Co and Fanuc rallied 1.9 per cent and 2.6 per cent, respectively, while exporters advanced as well. Advantest rose 3.1 per cent, TDK Corp jumped 4 per cent and Panasonic Corp advanced 1.7 per cent.

The broader Topix gained 0.8 per cent to 1,744.43.

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