Centuries-old tricks: Tu Pien Hsin Shu is a book containing 24 ways of cheating, such as "changing silver cheating" and "adultery trickery," all of which are illustrated by case studies to create a kind of compendium of all the tricks in society at that time.
「杜騙新書」內容是廿四類行騙手段，如「換銀騙」（有如今日的「金光黨」）、「奸情騙」（如今日的「仙人跳」）等，皆以案例說明，可以說是當時社會常見騙局總匯。