[00:00.01]BBC News with Gaenor Howells. [00:04:10]At the start of his first state visit to China, President Obama has said that the world would benefit if the US and China cooperated. [00:11.50]But in remarks during a debate with the young people in Shanghai, he said freedom of expression, religious freedom and free information were universal rights. [00:19.43]From Shanghai, Chris Hogg. [00:20.81]President Obama declared that his country and China need not be adversaries. [00:26.32]He assured his audience that the United States did not seek to impose any system of government on any other nation, but added that Americans did not believe the principles they stood for were unique to their nation. [00:39.20]His speech in the question-and-answer session that followed was streamed live on the internet and available across China. [00:45.24]The television broadcast was shown live in Shanghai, dubbed into Chinese, but with the president's words clearly audible underneath.