On July 9th, the third Sino-European Social Forum startup ceremony and Chengdu multi-topic dialogue were unveiled. Over 200 experts, scholars, and even commoners from both home and European countries, gathered, and focused their attention on the eight subjects of the Chengdu's construction of the world modern garden city and the post disaster reconstruction, developed a cross-border multi-topic and multi-faceted dialogue, and finally formed the "Chengdu Consensus", giving suggestions and ideas for Chengdu world modern garden city.