Zhao Tongzhou has invited you to join Quora!

	Zhao Tongzhou has invited you to join Quora!
	Zhao Tongzhou has invited you to join Quora, a service that connects you to everything you want to know about. Quora aims to be the easiest place to write new content and share content from the web. We organize people and their interests so you can find, collect and share the information most valuable to you. Join Quora by clicking the link below: http://www.quora.com/l/P6WSwT2ShP Thanks, The Quora Team Zhao Tongzhou on Quora