郑正鹄是清末英山(清代英山属安徽,1932年起属湖北)名士。他五短身材,其貌不扬,初任天水县令时,当地一些官绅以此奚落他,特请画工画了一幅《青蛙图》(画面是河边柳荫下蹲着一只张口的青蛙),派人送给郑题诗,目的是讥笑他的五短身材像青蛙。郑正鹄深知官绅们的花招,便当众题了《咏蛙》——小小青蛙似虎形,河边大树好遮荫。明春我不先开口,哪个虫儿敢作声。1910年秋,十六七岁的毛泽东借助亲戚和同族长老(?)说服一心要把他送到县城一家 Zheng Zhengyi is an ambassador to the late Qing Dynasty Yingshan (Anhui in the Qing Dynasty and Hubei in 1932). He was short and stature, and he was not handsome. When he was first appointed by Tianshui County, some local officials used him to abandon him. He asked the painter to draw a picture of “Frog Map” (a picture of a frog with a mouth open under the shade of Liuyin River). The poem was given to Zheng Ti, aiming to laugh at his five short stature like a frog. Zheng Zhengyu knows the bureaucrats’ tricks, and then they have the title of “Rana frog” - the little frogs are like tigers, and the riverside trees are well shaded. In the spring of next year, I don’t open my mouth, and any insects dare to make a sound. In the fall of 1910, Mao Zedong, aged 16 and 18, persuaded his relatives and elders (?) to send him to the county seat.