At the end of the examination, answer sheets were processed by the sealing office. The Ming era "Book of Swindles" (ca. 1617) contains an entire section of stories about "Corruption in Education," most of which involve swindlers exploiting exam-takers' desperate attempts to bribe the examiner. Exact quotes from the classics were required; misquoting even one character or writing it in the wrong form meant failure, so candidates went to great lengths to bring hidden copies of these texts with them, sometimes written on their underwear. The Minneapolis Institute of Arts holds an example of a Qing dynasty cheatsheet, a handkerchief with 10,000 characters of Confucian classics in microscopically small handwriting.