'Phags-pa script
The manuscript does not indicate when and by whom it was copied, and there are no ownership seals. However, on the basis of tabooed characters of Qing dynasty emperors, the manuscript has been dated to the Qianlong era (1736–1795). The manuscript may be a second or third hand copy of an original Yuan dynasty edition, made by someone who did not necessarily understand the 'Phags-pa script, and so the 'Phags-pa letters are often poorly written or corrupted, and there are many transcription errors such as missing, misplaced and incorrectly written Chinese characters.