From the 10 Oct 2016 Tj will be in China and the “tag-along” will start in Shanghai and all you will need to do is be in Shanghai on that date, if you cannot make it on that date then you will have other opportunities to tag-along at any of the other dates and places shown below:
10 Oct Shanghai START
17 Oct Beijing
24 Oct Xian
27 Oct Chengdu
1 Nov Lijiang YN
8 Nov Dali YN
16 Nov Kunming
20 Nov Guilin/Yangshuo
29 Nov Guangzhou
6 Dec Hong Kong END
So all you need to do is get your airfare, visa and travel insurance and leave the rest to Tj once you are in China
