When Du Fu (712-770) --who was called "the god of feelings" by early-republican writer Liang Qichao (1873-1929), as the poet most able to describe the gamut of human emotions--heard the cuckoo, he too wondered why this bird should choose to sing in the third and fourth lunar months, in a voice so sorrowful that blood flowed from its mouth.
被梁啟超認為最能寫人世情意、應稱為「情聖」的詩人杜甫，聽杜鵑啼叫也於心不忍，頻頻感嘆杜鵑為何四月五月偏號呼，聲音哀痛口流血。