From Mao Zedong's (
毛泽东) 1965 poem 《
水调歌头·
重上井冈山》:
世上无难事,
只要肯登攀 — 'In this world there is nothing truly hard, so long as one is willing to climb.' Became one of the most widely quoted lines of late-20th-century mainland political culture — a stock motivational motto in schools, workplaces and posters.