Alphabet Artists ATC #17 Cai Guo-Qiang

I thought it might be fun to create an alphabet of artist trading cards inspired by famous artists. The seventeenth artist is Cai Guo-Qiang . You can create artwork inspired by his work or small reproductions of his work. Please no printing an image off the internet and gluing it to a card or stickers. Please send in a protective case/plastic of some kind. You will be assigned only one partner and one ATC, so please put some effort into it. I am not requiring extras in the envelope, but if you feel inclined to send some fun surprises, go for it. Minimum rating of 4.9.