This book is based on the analysis of the etymology, etymology and usage of some of the contents of Kong Zhongnan's "Examination of Cantonese Idioms" and Zhan Xianci's "Cantonese Language", while Mr. Chen Xiaolang selected 50 slang words from each of these two books that are still commonly used today, and made research and analysis from the two perspectives of word origin and etymology, looked for examples from ancient classics such as the subset of classics of classics and history, pointed out the shortcomings of the original book, and also put forward his own unique opinions; At the same time, it introduces the phonetic semantics, usage context, and related anecdotes of the word today, adds the content of "supplementary knowledge", improves the interest, and reduces the boredom of word exegesis books.