signed and dated 'Zheng Guogu [in Chinese] 2003' upper left; further signed, titled and dated '"Computer controlled by pig's brain 28" Zheng Guogu [in Pinyin and Chinese] 2003' on the reverse

oil on canvas

work 53 x 53 cm. (20 7/8 x 20 7/8 in.)
frame 57 x 57 cm. (22 1/2 x 22 1/2 in.)

Painted in 2003.