From
白居易《
忆江南·
江南好》(Bai Juyi, 'Recalling Jiangnan: Jiangnan is Fine,' middle Tang, c. 835 CE):
江南好,
风景旧曾谙。
日出江花红胜火,
春来江水绿如蓝。
能不忆江南?(Jiangnan is fine — its scenery I once knew so well. At sunrise river-flowers are redder than fire; in spring the river water is green like indigo. How could I not remember Jiangnan?). Bai Juyi wrote this recalling his years as governor of Suzhou and Hangzhou; a foundational text of the 'Jiangnan nostalgia' tradition.