A visa is needed to enter China, please visit the website of the Chinese Embassy to get the important information for the visa. The official invitation letter, one page in Chinese from  Chinese Academy of Sciences and another page in English from the organizing committee, will be issued and sent to those who have marked the square bracket “To apply visa to China I need an official invitation letter: [  ] PDF via email or [  ] original letter by post” on the registration form. With the letters, one can go to the nearest Chinese Embassy or Consulate for an entry visa. Since World Expo 2010 Shanghai China is drawing nearer, an uncountable number of tourists from all over the world will come to China and hence applying visa may take longer time. For this reason, please return the registration form before early April in order to allow ample time for visa application. Any problem or questions on visa application please contact us.