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Dear Professor Bob,
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    As the chairman of the organizing committee of the international innovation contest,I am writing for the purpose of inviting you to organize a team for the contest.
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    To begin with, this contest is scheduled to be held on June 21 in the Center of Students` Activities at Peking University, which will last for three days. In addition, compared with other people, you possess richer experience in innovative theoretical research and developing products. Accordingly, We sincerely hope that you can lead your team to take part in this contest. We deem that your participation will bring everyone new horizons, inspire youngsters` passion for innovation, and help this contest be successful.
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    Finally, we are looking forward to your favorable reply at your earliest convenience and if you have any further questions, suggestions or requirements, please feel free to inform us.