"绽放”以极具生命力的牡丹为中心，供给它营养的绿色“管道”、所剩无几，污水管道处处可见，提醒着人们珍惜这仅有的绿色“管道”。/"Bloom" with extremely has the vitality the peony as the center, its nutrition supply green "pipe", left, sewage pipeline everywhere, reminding people to cherish the only green "pipeline".