this concert was held last month, i think. and i so happen to chance upon these 2 videos!

http://www.razor.tv/site/servlet/segment/main/news/35142.html;jsessionid=5425A22DE2A10A63069E14563F90F4A2.01
skip to 2.33 and you see siming's interview followed by segments from our syf dance performed during the starry hope concert!

http://www.razor.tv/site/servlet/segment/main/news/35150.html
skip to 0.48 for nanyang chinese dance segments!
you'll be able to see linkai swinging silei around. HAHA! ok, sounds weird here.. JUST WATCH THE VIDEO! :)