In 1994, a friend presented Zhou Chunya with a German shepherd dog named "Hei Gen", which since then became part of his life and turned into a source of his creations. Afterwards, Zhou Chunya endowed "Hei Gen" with green color symbolizing good luck in the west, so the "Green Dog" came into being.

The "Green Dog" was no longer the same as the original dog "Hei Gen", and as well gradually became Zhou Chunya's most representative work. In more than a decade, Zhou Chunya created dozens of "Green Dog" series paintings. The various looks and gestures in his works as well as being profoundly metaphorically demonstrate modern people's loneliness and the danger between one human being and another.

This "Green Dog" painting takes bright green as its principal part, along with an open mouth, the expression in the eyes, and has concise form but with a tactile impression the same as that of a sculpture; the brushwork appears to hide great power and the ripply layers of color also contain a kind of extremely unregulated element providing a heart-frightening vigour, which deeply relect Zhou Chunya's mind process in this period.

Zhou Chunya said: "Green Dog is a mark and a symbol, and green is a quiet, romantic and lyrical color which has a serene artistic conception." That is, he expresses a kind of feeling by the painting "Green Dog", which seems to be more than any sort of exact subject interpretation.