 Only after the discovery of the memorial tablets of Emperor Xingzong of Liao and his consort was it realized that the "Record of the Younger Brother of the Emperor" and the Liao-dynasty memorial tablets were both written in a Khitan script.Several more memorial tablets in the same script were discovered during the 1930s, including memorials for Emperor Daozong of Liao and his consort.Initially it was not clear whether the script inscribed on these memorial tablets was the Khitan large script, recorded to have been devised in 920, or the Khitan small script, recorded to have been devised about 925.