Ahahaha Im in Beijing now. Yesterday there was a big con in the Beijing Exhibition center... there's like a con every month. And I agree, Soshow has a whole level (6) dedicated to manga and anime and cosplay etc. Also BaiRong has an anime store on the toys level. To find cons search: 漫画展览 on baidu.com. Hope that helps!
New cos name: mofumofu