In his poem "The Tomb Sweeping Festival" the Sung poet Kao Chu-ching wrote: "The cemeteries on the hill tops to north and south are all a bustle with tomb sweeping and sacrifice, paper ash flutters like butterflies and tears of blood stain them red like cuckoos; as dusk falls foxes sleep on the graves while the returning children smile at their lanterns.
紙灰飛作白蝴蝶，淚血染成紅杜鵑；日落狐狸眠塚上，夜歸兒女笑燈前；