 The compilation of the "Liao Shi" was finished in one year by imperial historians, although without undergoing any but the most minimal of proofreadings.Because of this, the "Liao Shi" and the other two pre-Yuan histories are known for their technical errors, lack of precision, inconsistencies in transcribing non-Chinese terms and names, and over-lapping subject matter.Qing scholars Qian Daxin and Zhao Yi noted inconsistencies in the History of Liao in their works "Study of the Discrepancies in the Twenty-two Standard Histories" 廿二史劄記 and "Critical Notes on the Twenty-two Histories" 二十二史劄記.