11 July 2009
18 July 2009 Changsha, China
17 July 2010 SW of Xining, China
16 July 2011 SW of Xining, China
4 July 2013 Beijing, China
13 July 2014 Zhenjiang, China
23 July 2015 Anshan, China
21 June 2017 Juyongguan Great Wall, China
21 June 2017 Beijing, China