Lawmakers pressed China’s President Hu Jintao to get tough on North Korea and improve human rights on Thursday, but trod more softly on the currency dispute that is a major irritant between the world's top two economies.

Its undervaluing of the yuan makes China’s exports artificially cheap, critics charge, and contributes to a trade gap that Washington puts around $270 billion.

“This ... unfairly tilts the playing field toward domestic Chinese companies,” said Rick Larsen, the Democratic co-chairman of the bipartisan U.S.-China Working Group in the House.

Beijing residents said BBC and CNN broadcasts of the summit went blank when questions moved to human rights and anti-Chinese protesters.

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