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WASHINGTON, Jan. 20 (Xinhua) -- Visiting Chinese President Hu Jintao on Thursday called upon the U.S. Congress to continue helping the two countries boost their relations.Pursuing a healthy and steady development of China-U.S. ties is China's established policy and strategic choice, Hu stressed in talks here with Speaker John Boehner of the House and Majority leader Harry Reid of the Senate.It has also been the consensus of the U.S. administrations, whether Republican or Democratic, since the two countries established formal diplomatic relations 32 years ago, he added.Chinese President Hu Jintao (2nd L front) meets with U.S. Senate Majority Leader Harry Reid (2nd R front) on Capitol Hill in Washington, the United States, Jan. 20, 2011Thanks to the two nations' concerted efforts, the China-U.S. relationship has been moving forward steadily, Hu said, citing the two countries' increasing cooperation and coordination on trade, terrorism, climate change, Korean Peninsula denuclearization and other bilateral, regional and global issues.A sound relationship between Beijing and Washington not only serves the fundamental interests of both peoples, but greatly contributes to the peace, stability and prosperity of the Asia-Pacific region and beyond, the Chinese president said.With China and the United States differing in culture, social system and development level, it is normal for the two sides to have differences on some issues, he said.But what matters most is the common interests of the two countries, he stressed, saying that Beijing's position is that the two sides should seek common ground while reserving differences, so as to learn from each other and pursue common prosperity on the basis of mutual respect and equality.

BEIJING, Feb. 10 (Xinhua) -- The Chinese currency, or the yuan, on Thursday rose to a fresh high of 6.5849 against the U.S. dollar, according to the China Foreign Exchange Trading System.The central parity rate of the yuan, or RMB, was 1 basis point higher than the previous record of 6.585 set on Feb. 9, the previous trading day.The central parity rate has risen against the dollar for a three consecutive trading days.China's central bank announced on June 19 last year that it would further reform the yuan exchange rate formation mechanism to improve its flexibility.On China's foreign exchange spot market, the yuan can rise or fall 0.5 percent from the central parity rate each trading day.The central parity rate of the RMB against the U.S. dollar is based on a weighted average of prices before the opening of the market each business day.

LOS ANGELES, April 3 (Xinhua) -- People with lower levels of vitamin D are more likely to have stiffer arteries and an inability of blood vessels to relax, U.S. researchers have found.This finding also applies to people who are in general good health, according to researchers from the Emory University School of Medicine.The researchers presented their findings on Sunday at the annual American College of Cardiology meeting in New Orleans.Impaired vascular health in correlation with lower vitamin D levels contributes to high blood pressure and the risk of cardiovascular disease, the researchers say.The study involved 554 participants, with the average age of 47 and generally healthy.The average level of 25-hydroxyvitamin D (a stable form of the vitamin reflecting diet as well as production in the skin) in participants' blood was 31.8 nanograms per milliliter. In this group, 14 percent had 25-hydroxyvitamin D levels considered deficient, or less than 20 nanograms per milliliter, and 33 percent had levels considered insufficient, less than 30 nanograms per milliliter.The researchers monitored the ability of participants' blood vessels to relax by inflating and then removing a blood pressure cuff on their arms. To allow blood to flow back into the arm, blood vessels must relax and enlarge -- a change that can be measured by ultrasound. The researchers also made other measurements of smaller blood vessels and examined the resistance to blood flow imposed by the arteries.

BEIJING, May 10 (Xinhuanet) -- YouTube is adding more than 3,000 mainstream movies to its movie-rental service, media reports said Tuesday.Google Inc-owned YouTube is offering a mix of recent Hollywood blockbusters, independent and foreign movies for 99 cents up to 3.99 U.S. dollars each.The additions will push YouTube’s total movie rentals available to more than 6,000.In addition, hundreds of movies, including some offered before the latest launch, are available for free viewing as with other clips.“By expanding our content partnerships worldwide and stimulating the success of budding filmmakers, artists and entrepreneurs, we’ll ensure that YouTube remains the best place for the world to see and discover rich talent,” Salar Kamangar, head of YouTube, said.YouTube, which built a following by letting users post home videos and amateur clips, is counting on professionally produced content to draw more visitors and keep them on the site longer.YouTube users currently spend about 15 minutes on the site per day on average, compared with the five hours they spend on television, the company said.

LUQA, Malta, Feb. 28 (Xinhua) -- Four chartered planes of China Eastern Airlines left Malta Monday, taking home 1,115 Chinese nationals evacuated from Libya. The forth Airbus A340 plane with 275 evacuees on board took off from the Malta International Airport at about 08:40 p.m. local time (1940GMT), bringing the total number of Chinese nationals back home from Malta to 2,223.The flight CES 266 with 275 Chinese nationals on board flew to Beijing while the other three will land in Shanghai, according to Chinese Embassy in Malta.Three chartered flights are expected on Tuesday, the embassy said.In the past 48 hours, three chartered cruise ship with 4,800 Chinese evacuees have reached Valletta, capital of Malta.