110 years ago today, on December 23, 1915 (November 17, 1915 in the lunar calendar), "Ci Yuan" sold well all over the country. "Ci Yuan" In December 1915, the Commercial Press published the main edition of "Ci Yuan" compiled by Lu Erkui, Fang Yi, Fu Yunsen, etc. This is the first large-scale comprehensive dictionary in modern China. It is based on old character books, rhyme books and similar books, and absorbs the characteristics of modern books. On the one hand, from the perspective of words, it collects words, compound words, idioms, idioms, etc. On the other hand, from the practical point of view, it collects common names, place names, book titles and various intellectual items: a compilation. The whole book contains more than 10,000 words, and the word list is nearly 100,000. At the beginning of the year, Zhonghua Bookstore published "The Great Chinese Dictionary" with more than 48,000 words, exceeding the record of more than 47,000 words in "Kangxi Dictionary". The whole book is arranged according to the radical, with reverse tangent and straight phonetic phonetic, molecular interpretation of the meaning of the words, citing examples to indicate the title of the article, and collecting < unk >, ancient, provincial, or, vulgar, and corrupt all styles, one by one, distinguishing them, which is more detailed than "Kangxi Dictionary". However, it still focuses on the interpretation of ancient meanings, which cannot meet the needs of society. The Commercial Press then organized experts to compile and publish "The Source of Theses". It immediately became popular all over the country and became a best-selling masterpiece in the academic and cultural circles.