鳴謝藝術家提供
Paddle8,2014年9月21日
現藏者購自上述拍賣
Berlin, Martin-Gropius-Bau, Ai Weiwei: Evidence, April 3–July 7, 2014, p. 131 (editioned variant exhibited and illustrated, p. 130)
London, Lisson Gallery, Ai Weiwei, May 23–July 19, 2014 (editioned variant exhibited)
Colin Chinnery, “Ai Weiwei,” Frieze, no. 165, September 2014, p. 151