On this day, 26 years ago, on October 16, 1999 (September 8, 1999, the lunar calendar), a new version of "Ci Hai" was released. On October 16, 1999, the 1999 edition of my country's large-scale authoritative reference book "Ci Hai" met readers with a new look on the occasion of the 50th anniversary of the National Day. The compilation and revision of "Ci Hai" is a major event in our country's intellectual and publishing circles. For decades, it has received direct concern and concern from three generations of party and state leaders Mao Zedong, Deng Xiaoping, and Jiang Zemin. On the just-published 1999 edition of "Ci Hai", the title of the book personally inscribed by Comrade Jiang Zemin attracts attention. In accordance with international practice, large-scale reference books are revised every 10 years. After the 1979 and 1989 editions of "Ci Hai" were published, thousands of experts and scholars have worked carefully for the 1999 edition of "Ci Hai" for nearly five years. The newly revised "Ci Hai" is available in different versions such as color picture version, popular version and reduced version. Compared with previous versions, the new version of "Cihai" has achieved a comprehensive update of form and content with more accurate entry annotations, rich full-color illustrations, novel layout design, and exquisite printing technology. According to reports, the color picture book is the main version of the 1999 edition of "Ci Hai" and is also the iconic version. It is divided into 5 volumes in total, printed in full color, with rich pictures and texts. Among them, there are 16000 pictures, an increase of 385% from the 1989 edition, which has changed the outdated appearance of my country's large-scale comprehensive dictionary "white and black line drawings" since this century. The entire "color picture book" is full of the atmosphere of the times from binding design, layout to material selection and materials. It integrates use, viewing and collection, showing the latest level of publishing and printing of large-scale reference books in my country. The new version of "Ci Hai" focuses on innovation, new terms, new interpretations, new norms, new data, and new designs. The book contains 120,000 words, nearly 20 million words. Compared with the 1989 edition, more than 6000 entries and more than 4 million words have been added, most of which are new words that have appeared in recent years. The new version of "Cihai" has been re-reviewed and revised for the original entries, with a revision of 70%. For example, among international entries, all major changes that have occurred in the past 10 years, such as the drastic changes in Eastern Europe, the disintegration of the Soviet Union, the European Union, newly independent states, major international events, new international organizations, and newly deceased international figures, are added or revised one by one. Science and technology are changing rapidly and greatly. The new edition of "Cihai" has also made a large number of revisions and additions to this. Changes in administrative divisions, new changes in politics, economy, laws, population, etc., are also updated based on the latest data. Authoritative sources believe that the 109 disciplines involved in the new edition of "Ci Hai" accurately reflect the tremendous changes in the international situation, the in-depth development of domestic reforms, and the remarkable progress of human science and technology. It can be said to be a summary of the latest research results in various fields in the 20th century.