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U.S. President Barack Obama is holding a second round of talks with Chinese President Hu Jintao in Beijing, as the two sides tackle tough economic issues and other matters.
President Hu formally welcomed Mr. Obama during a ceremony at the Great Hall of the People Tuesday.
The two leaders are expected to discuss trade, China's controversial currency policy, climate change and the nuclear programs of Iran and North Korea.
White House aides said Mr. Obama would also raise the issue of human rights.
Mr. Obama held a first round of talks with Mr. Hu on Monday.
Also Monday, President Obama told students in Shanghai that he supports free access to the Internet, which China strictly censors. He also talked about what he called the "universal rights" of political expression, religious freedom and free information.
Mr. Obama added that countries should respect each other and should not impose their system of government on any other nation. But he said he will speak out in support of what Americans consider to be basic human freedoms.
The "town hall" meeting Mr. Obama held with university students in Shanghai was broadcast on the White House Web site, but the Chinese government carefully controlled media coverage of the event inside the country. The chat was be broadcast on local television but not nationwide.
On the sensitive topic of Taiwan, Mr. Obama said the United States supports a one-China policy. He said economic links have helped lower tensions across the Taiwan Strait, and that he he hopes for improved ties between Beijing and Taipei.
Mr. Obama told the students he considered climate change one of the most critical challenges facing the world. He said people around the world will be watching what the U.S. and China do on the issue.