Shinsei Chūshū "Shūeki Shakuko," "Ekigaku Keimō," "Ekigaku Kaitei," "Honzei Shinan" Pre-war edition, Showa 7 (1932) ◆ I Ching, Yi Studies, Divination Product Description The title lists the works clearly, but in reality, these are volumes 3 and 4 of "Sentetsu Iso Kanjikoku Jikai Zensho" published by Waseda University. This is a collection of authentic and unique Yi studies commentary books, including "Shūeki Shakuko" as a full commentary on the I Ching, and "Ekigaku Keimō," "Ekigaku Kaitei," and "Shūeki Honzei Shinan" as surrounding commentaries, compiled by the disciples of Shinsei Chūshū. "Shūeki Shakuko," for example, was only transmitted in manuscript form, and this series was the first to publish it in print, making it a valuable book. It is a large work, totaling about 1400 pages. It contains content that will last a lifetime for those studying Yi. Currently, purchasing each of these works from a used bookstore alone would cost several thousand to tens of thousands of yen. This series was first published in the Meiji era, and has been reprinted in the Taisho and Showa eras, with different cover designs each time. The item for sale is the Showa edition, from Showa 7 (1932), and has a soft cover similar to the Taisho edition. Although it is a newer edition within the series, it was published over 90 years ago, in 1932. The market price for this set is also increasing, with some stores selling it for over 8,000 yen. This set is offered at a bargain price. There are some minor stains and damage, but the overall condition is very good. The text pages are so clean that they feel new, and considering the nearly 100 years of aging, the condition is good, and can be considered to be in the category of a beautiful item. Sets in good condition are becoming rare in the market, but this is one of the best. For those who are looking for it, please use it for serious Yi research. Notes Both are stored in a case. The case has discoloration, minor scratches, and tears at the bottom (see images). The spine of the main body has a personal name stamp (see images). There is blackening on the cover and around the paper (see images). The text paper has yellowing, but the text pages are generally clean, and considering the nearly 100 years of aging, the condition is not bad, and can be considered to be in the category of a beautiful item.