You will need a valid passport and visa for visiting China. We recommend that you apply for a tour visa.
You may apply for a tour or a visitor's visa at the Chinese Embassy, or at the nearest consulate general. It may take a few days or weeks to get your visa. For detailed information, please contact your local Embassy or Consulate.

If you prefer to apply for a visit visa, the maximum duration is no longer than 10 days (July 20 - 29), the procedure for the invitation letter from Tsinghua University is shown as follow (all forms are available at the  conference website):

(1) To complete the online registration form and pay registration fee.
(2) To complete the invitation letter application form (including your name, passport number & etc.).
(3) To scan the passport information page.

Please email the required documents above to ccirm@sem.tsinghua.edu.cn.

It takes two weeks to issue an official invitation letter for Visa application, we advise that you complete all forms before June 10, 2014.